56985797 has 6 divisors (see below), whose sum is σ = 62637414. Its totient is φ = 51805160.

The previous prime is 56985791. The next prime is 56985811. The reversal of 56985797 is 79758965.

It can be written as a sum of positive squares in only one way, i.e., 56942116 + 43681 = 7546^2 + 209^2 .

It is not a de Polignac number, because 56985797 - 2²² = 52791493 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 (56985791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 235358 + ... + 235599.

It is an arithmetic number, because the mean of its divisors is an integer number (10439569).

Almost surely, 2^56985797 is an apocalyptic number.

It is an amenable number.

56985797 is a deficient number, since it is larger than the sum of its proper divisors (5651617).

56985797 is a wasteful number, since it uses less digits than its factorization.

56985797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470979 (or 470968 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 56.

The square root of 56985797 is about 7548.8937600154. The cubic root of 56985797 is about 384.8181454071.

The spelling of 56985797 in words is "fifty-six million, nine hundred eighty-five thousand, seven hundred ninety-seven".