56821534375 has 12 divisors (see below), whose sum is σ = 71022376152. Its totient is φ = 45457225000.

The previous prime is 56821534303. The next prime is 56821534397. The reversal of 56821534375 is 57343512865.

It is a happy number.

It is not a de Polignac number, because 56821534375 - 2²⁵ = 56787979943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9088321 + ... + 9094570.

It is an arithmetic number, because the mean of its divisors is an integer number (5918531346).

Almost surely, 2^56821534375 is an apocalyptic number.

56821534375 is a deficient number, since it is larger than the sum of its proper divisors (14200841777).

56821534375 is an frugal number, since it uses more digits than its factorization.

56821534375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18182916 (or 18182896 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 49.

The spelling of 56821534375 in words is "fifty-six billion, eight hundred twenty-one million, five hundred thirty-four thousand, three hundred seventy-five".