257707056 has 20 divisors (see below), whose sum is σ = 665743352. Its totient is φ = 85902336.

The previous prime is 257707049. The next prime is 257707081. The reversal of 257707056 is 650707752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2684401 + ... + 2684496.

Almost surely, 2^257707056 is an apocalyptic number.

It is an amenable number.

257707056 is an abundant number, since it is smaller than the sum of its proper divisors (408036296).

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

257707056 is a wasteful number, since it uses less digits than its factorization.

257707056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368908 (or 5368902 counting only the distinct ones).

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

The square root of 257707056 is about 16053.2568658201. The cubic root of 257707056 is about 636.3686403663.

The spelling of 257707056 in words is "two hundred fifty-seven million, seven hundred seven thousand, fifty-six".