57115571 has 2 divisors, whose sum is σ = 57115572. Its totient is φ = 57115570.

The previous prime is 57115559. The next prime is 57115573. The reversal of 57115571 is 17551175.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57115571 - 2⁶ = 57115507 is a prime.

Together with 57115573, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57115573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28557785 + 28557786.

It is an arithmetic number, because the mean of its divisors is an integer number (28557786).

Almost surely, 2^57115571 is an apocalyptic number.

57115571 is a deficient number, since it is larger than the sum of its proper divisors (1).

57115571 is an equidigital number, since it uses as much as digits as its factorization.

57115571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6125, while the sum is 32.

The square root of 57115571 is about 7557.4844359747. The cubic root of 57115571 is about 385.1100399461.

The spelling of 57115571 in words is "fifty-seven million, one hundred fifteen thousand, five hundred seventy-one".