57278764 has 6 divisors (see below), whose sum is σ = 100237844. Its totient is φ = 28639380.

The previous prime is 57278761. The next prime is 57278773. The reversal of 57278764 is 46787275.

It is not an unprimeable number, because it can be changed into a prime (57278761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7159842 + ... + 7159849.

Almost surely, 2^57278764 is an apocalyptic number.

It is an amenable number.

57278764 is a deficient number, since it is larger than the sum of its proper divisors (42959080).

57278764 is a wasteful number, since it uses less digits than its factorization.

57278764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14319695 (or 14319693 counting only the distinct ones).

The product of its digits is 658560, while the sum is 46.

The square root of 57278764 is about 7568.2735151420. The cubic root of 57278764 is about 385.4764753441.

The spelling of 57278764 in words is "fifty-seven million, two hundred seventy-eight thousand, seven hundred sixty-four".