56516031 has 24 divisors (see below), whose sum is σ = 95908176. Its totient is φ = 31616640.

The previous prime is 56516027. The next prime is 56516059. The reversal of 56516031 is 13061565.

It is a happy number.

56516031 is a `hidden beast` number, since 5 + 6 + 51 + 603 + 1 = 666.

It is not a de Polignac number, because 56516031 - 2² = 56516027 is a prime.

It is a super-2 number, since 2×56516031² = 6388123519985922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56515986 and 56516004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56516011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20670 + ... + 23243.

It is an arithmetic number, because the mean of its divisors is an integer number (3996174).

Almost surely, 2^56516031 is an apocalyptic number.

56516031 is a deficient number, since it is larger than the sum of its proper divisors (39392145).

56516031 is a wasteful number, since it uses less digits than its factorization.

56516031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43943 (or 43940 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 56516031 is about 7517.7144798137. The cubic root of 56516031 is about 383.7578021876.

Adding to 56516031 its reverse (13061565), we get a palindrome (69577596).

The spelling of 56516031 in words is "fifty-six million, five hundred sixteen thousand, thirty-one".