56116100521 has 32 divisors (see below), whose sum is σ = 64645862400. Its totient is φ = 48315536640.

The previous prime is 56116100477. The next prime is 56116100527. The reversal of 56116100521 is 12500161165.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56116100521 - 2⁷ = 56116100393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56116100521.

It is not an unprimeable number, because it can be changed into a prime (56116100527) 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 31 ways as a sum of consecutive naturals, for example, 7230375 + ... + 7238131.

It is an arithmetic number, because the mean of its divisors is an integer number (2020183200).

Almost surely, 2^56116100521 is an apocalyptic number.

It is an amenable number.

56116100521 is a deficient number, since it is larger than the sum of its proper divisors (8529761879).

56116100521 is a wasteful number, since it uses less digits than its factorization.

56116100521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8449.

The product of its (nonzero) digits is 1800, while the sum is 28.

Adding to 56116100521 its reverse (12500161165), we get a palindrome (68616261686).

The spelling of 56116100521 in words is "fifty-six billion, one hundred sixteen million, one hundred thousand, five hundred twenty-one".