57188087 has 16 divisors (see below), whose sum is σ = 66631680. Its totient is φ = 48568800.

The previous prime is 57188059. The next prime is 57188099. The reversal of 57188087 is 78088175.

It is a cyclic number.

It is not a de Polignac number, because 57188087 - 2¹² = 57183991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57181087) 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 in 15 ways as a sum of consecutive naturals, for example, 6998 + ... + 12780.

It is an arithmetic number, because the mean of its divisors is an integer number (4164480).

Almost surely, 2^57188087 is an apocalyptic number.

57188087 is a deficient number, since it is larger than the sum of its proper divisors (9443593).

57188087 is a wasteful number, since it uses less digits than its factorization.

57188087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854.

The product of its (nonzero) digits is 125440, while the sum is 44.

The square root of 57188087 is about 7562.2805422703. The cubic root of 57188087 is about 385.2729542419.

The spelling of 57188087 in words is "fifty-seven million, one hundred eighty-eight thousand, eighty-seven".