258 (number)

258 (two hundred [and] fifty-eight) 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

References