257124172 has 6 divisors (see below), whose sum is σ = 449967308. Its totient is φ = 128562084.

The previous prime is 257124151. The next prime is 257124173. The reversal of 257124172 is 271421752.

It is a super-2 number, since 2×257124172² = 132225679653371168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257124173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32140518 + ... + 32140525.

Almost surely, 2^257124172 is an apocalyptic number.

It is an amenable number.

257124172 is a deficient number, since it is larger than the sum of its proper divisors (192843136).

257124172 is a wasteful number, since it uses less digits than its factorization.

257124172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64281047 (or 64281045 counting only the distinct ones).

The product of its digits is 7840, while the sum is 31.

The square root of 257124172 is about 16035.0918924713. The cubic root of 257124172 is about 635.8884968614. Note that the first 3 decimals are identical.

The spelling of 257124172 in words is "two hundred fifty-seven million, one hundred twenty-four thousand, one hundred seventy-two".