37 (number)

37 (thirty-seven) is the natural number following 36 and preceding 38.

Template:Numbers 30s
Cardinal	37 thirty-seven
Ordinal	37th thirty-seventh
Factorization	prime
Divisors	1, 37
Roman numeral	XXXVII
Binary	0100101
Hexadecimal	25

In mathematics

It is a prime number, the fifth lucky prime, the first irregular prime, the third unique prime and the third cuban prime of the form

p={\frac {x^{3}-y^{3}}{x-y}}\qquad \left(x=y+1\right).

It is a factor of all 3-digit base 10 repdigits, such as 111. 37 is the smallest prime that is not also a supersingular prime. It is a centered hexagonal number and a star number.

37 and 38 are the first pair of consecutive positive integers not divisible by any of their digits.

Every positive integer is the sum of at most 37 fifth powers (see Waring's problem).

37 appears in the Padovan sequence, preceded by the terms 16, 21, 28 (it is the sum of the first two of these).

In science

The atomic number of rubidium.
The normal human body temperature in degrees Celsius.

Astronomy

Messier object M37, a magnitude 6.0 open cluster in the constellation Auriga
The New General Catalogue object NGC 37, a spiral galaxy in the constellation Phoenix
The Saros number of the solar eclipse series which began on -1794 June 25 and ended on -496 August 12. The duration of Saros series 37 was 1298.1 years, and it contained 73 solar eclipses.
The Saros number of the lunar eclipse series which began on -1492 April 3 and ended on -194 May 22. The duration of Saros series 37 was 1298.1 years, and it contained 73 lunar eclipses.

In numerology

666 = 18 x 37. Thus 37 is the largest prime factor of the Number of the Beast; and the factor 18 is significant in that it represents the age at which many vices become legal.
37 squared is 1369, a number which combines the unlucky connotations of 13 with the sexual connotations of 69. 13 and 69 are themselves connected in that 13 squared is 169.
1 x 37 = 37 and 3 + 7 = 10; 1 + 0 = 1
2 x 37 = 74 and 7 + 4 = 11; 1 + 1 = 2
3 x 37 = 111 and 1 + 1 + 1 = 3
6 x 37 = 222 and 2 + 2 + 2 = 6
9 x 37 = 333 and 3 + 3 + 3 = 9
12 x 37 = 444 and 4 + 4 + 4 = 12
15 x 37 = 555 and 5 + 5 + 5 = 15
18 x 37 = 666 and 6 + 6 + 6 = 18
21 x 37 = 777 and 7 + 7 + 7 = 21
24 x 37 = 888 and 8 + 8 + 8 = 24
27 x 37 = 999 and 9 + 9 + 9 = 27

In other fields

Thirty-seven is:

Part of the code for international direct dial phone calls to several smaller European countries
The number of the French department Indre-et-Loire
The number of slots in European Roulette
I-37 is the designation for a US interstate highway in Texas, running from San Antonio to Corpus Christi.
The number of baseball player and (more famously) manager Casey Stengel, which is retired by both the Yankees and the Mets
In the U.S., UHF Channel 37 (608 to 614 mHz) is the only allocated TV channel that has never been assigned to a station. (The frequency range is kept quiet so as to not interfere with radio astronomy devices there.)
The name of an on-line gaming order formed in the mid 1990's. Read their history and other information at their website: The 37 Gaming Clan
United States President Richard Nixon announced his resignation during his thirty-seventh television address from the Oval Office. He was the 37th U.S. President. Nixon graduated in 1937 from Duke University with 37 classmates.
When Paddy Hopkirk won the 1964 Monte Carlo Rally, his Mini carried the number 37. (His license plates read 33EJB, however.)
Lauren Hollinshead, 1876-2005, BA Fashion Business, Medically Petrified by the number 37...
Bill Elliott's Nextel Cup Series number
Limerick 37 is a soccer club competing in the League of Ireland, named after the year senior soccer first came to the City of Limerick.
37 is the number of dicks that Dante Hicks's girlfriend Veronica Loughran had sucked on in Kevin Smith's film Clerks.
37 is the inmate number worn by Paul Newman's character in the film Cool Hand Luke.

Historical years

37 B.C., 37 A.D., 1937, 2037, 3737, etc