58 (number)

58 is the natural number following 57 and preceding 59.

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.

In science

• The atomic number of cerium, a lanthanide

In 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.