57505087 has 2 divisors, whose sum is σ = 57505088. Its totient is φ = 57505086.

The previous prime is 57505069. The next prime is 57505103. The reversal of 57505087 is 78050575.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57505087 - 2¹⁹ = 56980799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57505687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28752543 + 28752544.

It is an arithmetic number, because the mean of its divisors is an integer number (28752544).

Almost surely, 2^57505087 is an apocalyptic number.

57505087 is a deficient number, since it is larger than the sum of its proper divisors (1).

57505087 is an equidigital number, since it uses as much as digits as its factorization.

57505087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 57505087 is about 7583.2108634799. The cubic root of 57505087 is about 385.9835133947.

The spelling of 57505087 in words is "fifty-seven million, five hundred five thousand, eighty-seven".