59 (number)

List of numbers — Integers << 50 51 52 53 54 55 56 57 58 59 >>
Cardinal	fifty-nine
Ordinal	59th (fifty-ninth)
Factorization	prime
Roman numeral	LIX
Binary	111011
Hexadecimal	3B

Fifty-nine is the 17th smallest prime number. The next is sixty-one, with which it comprises a twin prime. 59 is an irregular prime.

Fifty-nine is also:

• The atomic number of praseodymium, a lanthanide.
• The number of icosahedra discussed in H. S. M. Coxeter, P. Du Val, H. T. Flather, and J. F. Petrie's book The Fifty-Nine Icosahedra.
• The designation of Interstate 59, a freeway that runs from Louisiana to Georgia.
• The year AD 59, 59 BC, or 1959.
• Approximately the number of days in two lunar months.