57257764 has 12 divisors (see below), whose sum is σ = 104557824. Its totient is φ = 27384104.

The previous prime is 57257749. The next prime is 57257777. The reversal of 57257764 is 46775275.

It is a self number, because there is not a number n which added to its sum of digits gives 57257764.

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, 311092 + ... + 311275.

It is an arithmetic number, because the mean of its divisors is an integer number (8713152).

Almost surely, 2^57257764 is an apocalyptic number.

It is an amenable number.

57257764 is a deficient number, since it is larger than the sum of its proper divisors (47300060).

57257764 is a wasteful number, since it uses less digits than its factorization.

57257764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622394 (or 622392 counting only the distinct ones).

The product of its digits is 411600, while the sum is 43.

The square root of 57257764 is about 7566.8860173786. The cubic root of 57257764 is about 385.4293607597.

The spelling of 57257764 in words is "fifty-seven million, two hundred fifty-seven thousand, seven hundred sixty-four".