258 is an esthetic number in base 15, because in such base it adjacent digits differ by 1.
It is a sphenic number, since it is the product of 3 distinct primes.
258 is an admirable number.
It is an Ulam number.
It is an alternating number because its digits alternate between even and odd.
It is a straight-line number, since its digits are in arithmetic progression.
It is a plaindrome in base 10, base 13, base 14 and base 15.
It is a nialpdrome in base 6.
It is an upside-down number.
258 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
258 is a wasteful number, since it uses less digits than its factorization.
258 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 48.
The square root of 258 is about 16.0623784042. The cubic root of 258 is about 6.3660967604.
The spelling of 258 in words is "two hundred fifty-eight", and is thus an aban number.