57905591 has 2 divisors, whose sum is σ = 57905592. Its totient is φ = 57905590.

The previous prime is 57905569. The next prime is 57905599. The reversal of 57905591 is 19550975.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57905591 - 2⁶ = 57905527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57905599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28952795 + 28952796.

It is an arithmetic number, because the mean of its divisors is an integer number (28952796).

Almost surely, 2^57905591 is an apocalyptic number.

57905591 is a deficient number, since it is larger than the sum of its proper divisors (1).

57905591 is an equidigital number, since it uses as much as digits as its factorization.

57905591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70875, while the sum is 41.

The square root of 57905591 is about 7609.5723270102. The cubic root of 57905591 is about 386.8775238008.

The spelling of 57905591 in words is "fifty-seven million, nine hundred five thousand, five hundred ninety-one".