115 is the natural number following 114 and preceding 116. 115 is a heptagonal pyramidal number.

List of numbers — Integers << 110 111 112 113 114 115 116 117 118 119 >>
Cardinal	one hundred [and] fifteen
Ordinal	115th
Factorization
Roman numeral	CXV
Binary	1110011
Hexadecimal	73

One hundred fifteen is also:

• The atomic number of an element temporarily called ununpentium.
• The year AD 115 or 115 BC.