57657071 has 2 divisors, whose sum is σ = 57657072. Its totient is φ = 57657070.

The previous prime is 57657059. The next prime is 57657073. The reversal of 57657071 is 17075675.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57657071 is a prime.

Together with 57657073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57657073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28828535 + 28828536.

It is an arithmetic number, because the mean of its divisors is an integer number (28828536).

Almost surely, 2^57657071 is an apocalyptic number.

57657071 is a deficient number, since it is larger than the sum of its proper divisors (1).

57657071 is an equidigital number, since it uses as much as digits as its factorization.

57657071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51450, while the sum is 38.

The square root of 57657071 is about 7593.2253357845. The cubic root of 57657071 is about 386.3232613798.

The spelling of 57657071 in words is "fifty-seven million, six hundred fifty-seven thousand, seventy-one".