258 (number)
258 is the natural number following 257 and preceding 259.
In mathematics
258 is:- a sphenic number
- a nontotient
- the sum of four consecutive prime numbers because 258 = 59 + 61 + 67 + 71
- 63 + 62 + 6
- an Ulam number
258 is the natural number following 257 and preceding 259.