56531797 has 8 divisors (see below), whose sum is σ = 64838336. Its totient is φ = 48282912.

The previous prime is 56531779. The next prime is 56531801. The reversal of 56531797 is 79713565.

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

It is a cyclic number.

It is not a de Polignac number, because 56531797 - 2²³ = 48143189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56531737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12288 + ... + 16249.

It is an arithmetic number, because the mean of its divisors is an integer number (8104792).

Almost surely, 2^56531797 is an apocalyptic number.

It is an amenable number.

56531797 is a deficient number, since it is larger than the sum of its proper divisors (8306539).

56531797 is a wasteful number, since it uses less digits than its factorization.

56531797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28827.

The product of its digits is 198450, while the sum is 43.

The square root of 56531797 is about 7518.7629966637. The cubic root of 56531797 is about 383.7934838805.

The spelling of 56531797 in words is "fifty-six million, five hundred thirty-one thousand, seven hundred ninety-seven".