257171160 has 32 divisors (see below), whose sum is σ = 771513840. Its totient is φ = 68578944.

The previous prime is 257171143. The next prime is 257171171. The reversal of 257171160 is 61171752.

It is a super-2 number, since 2×257171160² = 132274011071491200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071427 + ... + 1071666.

Almost surely, 2^257171160 is an apocalyptic number.

257171160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257171160 is an abundant number, since it is smaller than the sum of its proper divisors (514342680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257171160 is a wasteful number, since it uses less digits than its factorization.

257171160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143107 (or 2143103 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 257171160 is about 16036.5569870842. The cubic root of 257171160 is about 635.9272295206.

The spelling of 257171160 in words is "two hundred fifty-seven million, one hundred seventy-one thousand, one hundred sixty".