57256516 has 12 divisors (see below), whose sum is σ = 100590588. Its totient is φ = 28516352.

The previous prime is 57256477. The next prime is 57256523. The reversal of 57256516 is 61565275.

It can be written as a sum of positive squares in 2 ways, for example, as 57002500 + 254016 = 7550^2 + 504^2 .

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, 26821 + ... + 28876.

It is an arithmetic number, because the mean of its divisors is an integer number (8382549).

Almost surely, 2^57256516 is an apocalyptic number.

It is an amenable number.

57256516 is a deficient number, since it is larger than the sum of its proper divisors (43334072).

57256516 is a wasteful number, since it uses less digits than its factorization.

57256516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55958 (or 55956 counting only the distinct ones).

The product of its digits is 63000, while the sum is 37.

The square root of 57256516 is about 7566.8035523595. The cubic root of 57256516 is about 385.4265604447.

The spelling of 57256516 in words is "fifty-seven million, two hundred fifty-six thousand, five hundred sixteen".