57887491 has 2 divisors, whose sum is σ = 57887492. Its totient is φ = 57887490.

The previous prime is 57887483. The next prime is 57887513. The reversal of 57887491 is 19478875.

57887491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57887491 - 2³ = 57887483 is a prime.

It is a super-2 number, since 2×57887491² = 6701923228550162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57887441) 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 as a sum of consecutive naturals, namely, 28943745 + 28943746.

It is an arithmetic number, because the mean of its divisors is an integer number (28943746).

Almost surely, 2^57887491 is an apocalyptic number.

57887491 is a deficient number, since it is larger than the sum of its proper divisors (1).

57887491 is an equidigital number, since it uses as much as digits as its factorization.

57887491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 49.

The square root of 57887491 is about 7608.3829425181. The cubic root of 57887491 is about 386.8372098300.

The spelling of 57887491 in words is "fifty-seven million, eight hundred eighty-seven thousand, four hundred ninety-one".