257158 has 8 divisors (see below), whose sum is σ = 420840. Its totient is φ = 116880.

The previous prime is 257141. The next prime is 257161. The reversal of 257158 is 851752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×257158² = 132260473928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5823 + ... + 5866.

It is an arithmetic number, because the mean of its divisors is an integer number (52605).

2²⁵⁷¹⁵⁸ is an apocalyptic number.

257158 is a deficient number, since it is larger than the sum of its proper divisors (163682).

257158 is a wasteful number, since it uses less digits than its factorization.

257158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11702.

The product of its digits is 2800, while the sum is 28.

The square root of 257158 is about 507.1074836758. The cubic root of 257158 is about 63.5916382082.

The spelling of 257158 in words is "two hundred fifty-seven thousand, one hundred fifty-eight".