257575172 has 12 divisors (see below), whose sum is σ = 474480720. Its totient is φ = 122009256.

The previous prime is 257575159. The next prime is 257575217. The reversal of 257575172 is 271575752.

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, 1694498 + ... + 1694649.

It is an arithmetic number, because the mean of its divisors is an integer number (39540060).

Almost surely, 2^257575172 is an apocalyptic number.

It is an amenable number.

257575172 is a deficient number, since it is larger than the sum of its proper divisors (216905548).

257575172 is a wasteful number, since it uses less digits than its factorization.

257575172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389170 (or 3389168 counting only the distinct ones).

The product of its digits is 171500, while the sum is 41.

The square root of 257575172 is about 16049.1486378562. The cubic root of 257575172 is about 636.2600659719.

The spelling of 257575172 in words is "two hundred fifty-seven million, five hundred seventy-five thousand, one hundred seventy-two".