257572371 has 12 divisors (see below), whose sum is σ = 399500232. Its totient is φ = 147184128.

The previous prime is 257572369. The next prime is 257572387. The reversal of 257572371 is 173275752.

It is not a de Polignac number, because 257572371 - 2¹ = 257572369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257572351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 875950 + ... + 876243.

It is an arithmetic number, because the mean of its divisors is an integer number (33291686).

Almost surely, 2^257572371 is an apocalyptic number.

257572371 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

257572371 is a deficient number, since it is larger than the sum of its proper divisors (141927861).

257572371 is a wasteful number, since it uses less digits than its factorization.

257572371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752210 (or 1752203 counting only the distinct ones).

The product of its digits is 102900, while the sum is 39.

The square root of 257572371 is about 16049.0613744231. The cubic root of 257572371 is about 636.2577596279.

The spelling of 257572371 in words is "two hundred fifty-seven million, five hundred seventy-two thousand, three hundred seventy-one".