57715591 has 2 divisors, whose sum is σ = 57715592. Its totient is φ = 57715590.

The previous prime is 57715573. The next prime is 57715633. The reversal of 57715591 is 19551775.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57715591 - 2¹¹ = 57713543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57715571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28857795 + 28857796.

It is an arithmetic number, because the mean of its divisors is an integer number (28857796).

Almost surely, 2^57715591 is an apocalyptic number.

57715591 is a deficient number, since it is larger than the sum of its proper divisors (1).

57715591 is an equidigital number, since it uses as much as digits as its factorization.

57715591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55125, while the sum is 40.

The square root of 57715591 is about 7597.0777934677. The cubic root of 57715591 is about 386.4539189182.

The spelling of 57715591 in words is "fifty-seven million, seven hundred fifteen thousand, five hundred ninety-one".