56612813 has 4 divisors (see below), whose sum is σ = 56631168. Its totient is φ = 56594460.

The previous prime is 56612797. The next prime is 56612861. The reversal of 56612813 is 31821665.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56612813 - 2⁴ = 56612797 is a prime.

It is a super-3 number, since 3×56612813³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56612813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56612113) 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 3 ways as a sum of consecutive naturals, for example, 3293 + ... + 11138.

It is an arithmetic number, because the mean of its divisors is an integer number (14157792).

Almost surely, 2^56612813 is an apocalyptic number.

It is an amenable number.

56612813 is a deficient number, since it is larger than the sum of its proper divisors (18355).

56612813 is a wasteful number, since it uses less digits than its factorization.

56612813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18354.

The product of its digits is 8640, while the sum is 32.

The square root of 56612813 is about 7524.1486561604. The cubic root of 56612813 is about 383.9767351537.

The spelling of 56612813 in words is "fifty-six million, six hundred twelve thousand, eight hundred thirteen".