58 (number)
Encyclopedia : 5 : 58 : 58N : 58 (number)
58 (fifty-eight) is the natural number following 57 and preceding 59.
| Cardinal | 58 fifty-eight |
| Ordinal | 58th fifty-eighth |
| Factorization | [2\cdot 29] |
| Divisors | 1, 2, 29, 58 |
| Roman numeral | LVIII |
| Binary | 111010 |
| Hexadecimal | 3A |
In mathematics
Fifty-eight is the sum of the first seven prime numbers, an 11-gonal number, and a Smith number. Given 58, the Mertens function returns 0.
There is no answer to the equation x - φ(x) = 58, making 58 a noncototient. However, the sum of the totient function for the first thirteen integers is 58.
In science
- The atomic number of cerium, a lanthanide
Astronomy
- Messier object M58, a magnitude 11.0 galaxy in the constellation Virgo
- The New General Catalogue [object] NGC 58, a barred spiral galaxy in the constellation Cetus. It is also the object designated as NGC 47
- The Saros [number] of the solar eclipse series which began on -1114 June 7 and ended on 166 July 14. The duration of Saros series 58 was 1280.1 years, and it contained 72 solar eclipses.
- The Saros [number] of the lunar eclipse series which began on -812 March 16 and ended on 486 May 4. The duration of Saros series 58 was 1298.1 years, and it contained 73 lunar eclipses.
In other fields
Fifty-eight is also:
- The code for international direct dial phone calls to Venezuela.
- Part of the title of a collection of songs by Esther Lee, Fifty-Eight Now Nine.
- The year AD 58, 58 BC, or 1958.
- The number of usable cells on a Hexxagon game board.
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