56821531472 has 20 divisors (see below), whose sum is σ = 110317793376. Its totient is φ = 28352423520.

The previous prime is 56821531469. The next prime is 56821531489. The reversal of 56821531472 is 27413512865.

56821531472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3638354 + ... + 3653937.

Almost surely, 2^56821531472 is an apocalyptic number.

It is an amenable number.

56821531472 is a deficient number, since it is larger than the sum of its proper divisors (53496261904).

56821531472 is a wasteful number, since it uses less digits than its factorization.

56821531472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7292786 (or 7292780 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The spelling of 56821531472 in words is "fifty-six billion, eight hundred twenty-one million, five hundred thirty-one thousand, four hundred seventy-two".