57142864 has 10 divisors (see below), whose sum is σ = 110714330. Its totient is φ = 28571424.

The previous prime is 57142853. The next prime is 57142907. The reversal of 57142864 is 46824175.

It can be written as a sum of positive squares in only one way, i.e., 55950400 + 1192464 = 7480^2 + 1092^2 .

It is a super-2 number, since 2×57142864² = 6530613812244992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1785699 + ... + 1785730.

It is an arithmetic number, because the mean of its divisors is an integer number (11071433).

Almost surely, 2^57142864 is an apocalyptic number.

It is an amenable number.

57142864 is a deficient number, since it is larger than the sum of its proper divisors (53571466).

57142864 is a wasteful number, since it uses less digits than its factorization.

57142864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571437 (or 3571431 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 57142864 is about 7559.2899137419. The cubic root of 57142864 is about 385.1713725177.

The spelling of 57142864 in words is "fifty-seven million, one hundred forty-two thousand, eight hundred sixty-four".