57431566 has 16 divisors (see below), whose sum is σ = 91622160. Its totient is φ = 26922240.

The previous prime is 57431551. The next prime is 57431567. The reversal of 57431566 is 66513475.

57431566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57431567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4105 + ... + 11476.

It is an arithmetic number, because the mean of its divisors is an integer number (5726385).

Almost surely, 2^57431566 is an apocalyptic number.

57431566 is a deficient number, since it is larger than the sum of its proper divisors (34190594).

57431566 is a wasteful number, since it uses less digits than its factorization.

57431566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15699.

The product of its digits is 75600, while the sum is 37.

The square root of 57431566 is about 7578.3616963035. The cubic root of 57431566 is about 385.8189482648.

The spelling of 57431566 in words is "fifty-seven million, four hundred thirty-one thousand, five hundred sixty-six".