57391086 has 16 divisors (see below), whose sum is σ = 114879744. Its totient is φ = 19114104.

The previous prime is 57391079. The next prime is 57391091. The reversal of 57391086 is 68019375.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5211 + ... + 11913.

It is an arithmetic number, because the mean of its divisors is an integer number (7179984).

Almost surely, 2^57391086 is an apocalyptic number.

57391086 is an abundant number, since it is smaller than the sum of its proper divisors (57488658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57391086 is a wasteful number, since it uses less digits than its factorization.

57391086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8135.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 57391086 is about 7575.6904635815. The cubic root of 57391086 is about 385.7282802291.

The spelling of 57391086 in words is "fifty-seven million, three hundred ninety-one thousand, eighty-six".