57512687 has 2 divisors, whose sum is σ = 57512688. Its totient is φ = 57512686.

The previous prime is 57512671. The next prime is 57512701. The reversal of 57512687 is 78621575.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57512687 - 2⁴ = 57512671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57512617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28756343 + 28756344.

It is an arithmetic number, because the mean of its divisors is an integer number (28756344).

Almost surely, 2^57512687 is an apocalyptic number.

57512687 is a deficient number, since it is larger than the sum of its proper divisors (1).

57512687 is an equidigital number, since it uses as much as digits as its factorization.

57512687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 41.

The square root of 57512687 is about 7583.7119539181. The cubic root of 57512687 is about 386.0005167917. Note that the first 3 decimals are identical.

The spelling of 57512687 in words is "fifty-seven million, five hundred twelve thousand, six hundred eighty-seven".