258172 has 24 divisors (see below), whose sum is σ = 492800. Its totient is φ = 117936.

The previous prime is 258161. The next prime is 258173. The reversal of 258172 is 271852.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258173) by changing a digit.

258172 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3229 + ... + 3307.

2²⁵⁸¹⁷² is an apocalyptic number.

It is an amenable number.

258172 is a deficient number, since it is larger than the sum of its proper divisors (234628).

258172 is a wasteful number, since it uses less digits than its factorization.

258172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 143 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 258172 is about 508.1062880933. The cubic root of 258172 is about 63.6751113433.

The spelling of 258172 in words is "two hundred fifty-eight thousand, one hundred seventy-two".