57031166725571 has 4 divisors (see below), whose sum is σ = 57148273844592. Its totient is φ = 56914059606552.

The previous prime is 57031166725531. The next prime is 57031166725619. The reversal of 57031166725571 is 17552766113075.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57031166725571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57031166725531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58553558780 + ... + 58553559753.

It is an arithmetic number, because the mean of its divisors is an integer number (14287068461148).

Almost surely, 2^{57031166725571} is an apocalyptic number.

57031166725571 is a deficient number, since it is larger than the sum of its proper divisors (117107119021).

57031166725571 is a wasteful number, since it uses less digits than its factorization.

57031166725571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117107119020.

The product of its (nonzero) digits is 9261000, while the sum is 56.

The spelling of 57031166725571 in words is "fifty-seven trillion, thirty-one billion, one hundred sixty-six million, seven hundred twenty-five thousand, five hundred seventy-one".