57512690 has 16 divisors (see below), whose sum is σ = 104687640. Its totient is φ = 22746240.

The previous prime is 57512687. The next prime is 57512701. The reversal of 57512690 is 9621575.

It can be written as a sum of positive squares in 4 ways, for example, as 18412681 + 39100009 = 4291^2 + 6253^2 .

It is a super-2 number, since 2×57512690² = 6615419022072200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57512690.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31421 + ... + 33200.

Almost surely, 2^57512690 is an apocalyptic number.

57512690 is a deficient number, since it is larger than the sum of its proper divisors (47174950).

57512690 is a wasteful number, since it uses less digits than its factorization.

57512690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64717.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 57512690 is about 7583.7121517104. The cubic root of 57512690 is about 386.0005235033. Note that the first 3 decimals are identical.

The spelling of 57512690 in words is "fifty-seven million, five hundred twelve thousand, six hundred ninety".