56004631521 has 8 divisors (see below), whose sum is σ = 74956770240. Its totient is φ = 37194456912.

The previous prime is 56004631489. The next prime is 56004631549. The reversal of 56004631521 is 12513640065.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56004631521 - 2⁵ = 56004631489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56004631721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35490106 + ... + 35491683.

It is an arithmetic number, because the mean of its divisors is an integer number (9369596280).

Almost surely, 2^56004631521 is an apocalyptic number.

It is an amenable number.

56004631521 is a deficient number, since it is larger than the sum of its proper divisors (18952138719).

56004631521 is a wasteful number, since it uses less digits than its factorization.

56004631521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70982055.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 56004631521 in words is "fifty-six billion, four million, six hundred thirty-one thousand, five hundred twenty-one".