56223813 has 8 divisors (see below), whose sum is σ = 75046176. Its totient is φ = 37442000.

The previous prime is 56223803. The next prime is 56223857. The reversal of 56223813 is 31832265.

56223813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56223813 - 2⁵ = 56223781 is a prime.

It is a super-2 number, since 2×56223813² = 6322234296517938, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56223803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6738 + ... + 12563.

It is an arithmetic number, because the mean of its divisors is an integer number (9380772).

Almost surely, 2^56223813 is an apocalyptic number.

It is an amenable number.

56223813 is a deficient number, since it is larger than the sum of its proper divisors (18822363).

56223813 is a wasteful number, since it uses less digits than its factorization.

56223813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20275.

The product of its digits is 8640, while the sum is 30.

The square root of 56223813 is about 7498.2539967648. The cubic root of 56223813 is about 383.0952481671.

The spelling of 56223813 in words is "fifty-six million, two hundred twenty-three thousand, eight hundred thirteen".