56529081217 has 16 divisors (see below), whose sum is σ = 64988144640. Its totient is φ = 48166078032.

The previous prime is 56529081187. The next prime is 56529081263. The reversal of 56529081217 is 71218092565.

It is a cyclic number.

It is not a de Polignac number, because 56529081217 - 2³⁵ = 22169342849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56529081017) 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, 4759228 + ... + 4771090.

It is an arithmetic number, because the mean of its divisors is an integer number (4061759040).

Almost surely, 2^56529081217 is an apocalyptic number.

It is an amenable number.

56529081217 is a deficient number, since it is larger than the sum of its proper divisors (8459063423).

56529081217 is a wasteful number, since it uses less digits than its factorization.

56529081217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15852.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 56529081217 in words is "fifty-six billion, five hundred twenty-nine million, eighty-one thousand, two hundred seventeen".