57520612561 has 16 divisors (see below), whose sum is σ = 59667038208. Its totient is φ = 55393056000.

The previous prime is 57520612549. The next prime is 57520612579. The reversal of 57520612561 is 16521602575.

It is a cyclic number.

It is not a de Polignac number, because 57520612561 - 2⁷ = 57520612433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57520613561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5420661 + ... + 5431261.

It is an arithmetic number, because the mean of its divisors is an integer number (3729189888).

Almost surely, 2^57520612561 is an apocalyptic number.

It is an amenable number.

57520612561 is a deficient number, since it is larger than the sum of its proper divisors (2146425647).

57520612561 is a wasteful number, since it uses less digits than its factorization.

57520612561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11472.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 57520612561 in words is "fifty-seven billion, five hundred twenty million, six hundred twelve thousand, five hundred sixty-one".