15

Letters that make 15

1, 5 are letters that make '15'

are words within '15'

51 is an anagram of '15'

2 possible definitions for '15'

Under this definition, 15 is a noun and has the following properties:

fifteen, XV have the same meaning as '15'

'15' can be a type of large integer.

xv, fifteen, 15 are derivatives of '15'.

Under this definition, 15 is an adjective and has the following properties:

fifteen, xv have the same meaning as '15'

XV, fifteen, 15 are derivatives of '15'.

cardinal is similar to 15.