57131562641 has 4 divisors (see below), whose sum is σ = 57145323492. Its totient is φ = 57117801792.

The previous prime is 57131562629. The next prime is 57131562659. The reversal of 57131562641 is 14626513175.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31634179600 + 25497383041 = 177860^2 + 159679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57131562641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57131562671) 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 in 3 ways as a sum of consecutive naturals, for example, 6874196 + ... + 6882501.

It is an arithmetic number, because the mean of its divisors is an integer number (14286330873).

Almost surely, 2^57131562641 is an apocalyptic number.

It is an amenable number.

57131562641 is a deficient number, since it is larger than the sum of its proper divisors (13760851).

57131562641 is a wasteful number, since it uses less digits than its factorization.

57131562641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13760850.

The product of its digits is 151200, while the sum is 41.

The spelling of 57131562641 in words is "fifty-seven billion, one hundred thirty-one million, five hundred sixty-two thousand, six hundred forty-one".