37 (number)
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37 is the natural number following 36 and preceding 38.
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Cardinal | thirty-seven | ||
Ordinal | 37th (thirty-seventh) | ||
Factorization | prime | ||
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 as well as the third cuban prime of the form <math>p = (x^3 - y^3) / (x - y), x = y + 1<math>. 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.
Every positive integer is the sum of at most 37 fifth powers (see Waring's problem).
In science
- The atomic number of rubidium.
- The normal human body temperature in degrees Celsius.
- In 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 other fields
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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.
- The number used in a certain magic trick. In this trick the magician asks a person to think of a number that meets the following criteria: a. must be between 1 and 50, b. must have two digits, c. both digits must be odd, d. both digits cannot be the same. Only eight numbers meet these criteria: 13, 15, 17, 19, 31, 35, 37, and 39. Statistically, people will pick 37 over any of the other numbers. Therefore, the magician can use this probability to create the effect of mind-reading. Of course, it doesn't always work, but when it does, it provides for a very startling effect.
- The year A.D. 37, 37 BC, or 1937.
- A recurring trademark in the films of Kevin Smith.
- With the number 27, a key number in comedian Charles Fleischer's concept of moleeds (http://www.monkeydog.com/moleeds/).es:Treinta y siete
eo:Tridek sep fr:37 (nombre) ko:37 ia:37 it:Trentasette nl:37 (getal) ja:37 no:37 (tall) pt:Trinta e sete sl:37 (število) sv:37 (tal) zh:37