57287764 has 12 divisors (see below), whose sum is σ = 100576084. Its totient is φ = 28551744.

The previous prime is 57287749. The next prime is 57287777. The reversal of 57287764 is 46778275.

It can be written as a sum of positive squares in 2 ways, for example, as 3880900 + 53406864 = 1970^2 + 7308^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21627 + ... + 24130.

Almost surely, 2^57287764 is an apocalyptic number.

It is an amenable number.

57287764 is a deficient number, since it is larger than the sum of its proper divisors (43288320).

57287764 is a wasteful number, since it uses less digits than its factorization.

57287764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46074 (or 46072 counting only the distinct ones).

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

The square root of 57287764 is about 7568.8680791780. The cubic root of 57287764 is about 385.4966637836.

The spelling of 57287764 in words is "fifty-seven million, two hundred eighty-seven thousand, seven hundred sixty-four".