56321397 has 12 divisors (see below), whose sum is σ = 88749024. Its totient is φ = 34134120.

The previous prime is 56321387. The next prime is 56321429. The reversal of 56321397 is 79312365.

56321397 is a `hidden beast` number, since 5 + 632 + 13 + 9 + 7 = 666.

It is not a de Polignac number, because 56321397 - 2¹¹ = 56319349 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56321387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 284353 + ... + 284550.

It is an arithmetic number, because the mean of its divisors is an integer number (7395752).

Almost surely, 2^56321397 is an apocalyptic number.

It is an amenable number.

56321397 is a deficient number, since it is larger than the sum of its proper divisors (32427627).

56321397 is a wasteful number, since it uses less digits than its factorization.

56321397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568920 (or 568917 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 56321397 is about 7504.7582905781. The cubic root of 56321397 is about 383.3167578634.

The spelling of 56321397 in words is "fifty-six million, three hundred twenty-one thousand, three hundred ninety-seven".