56243013 has 4 divisors (see below), whose sum is σ = 74990688. Its totient is φ = 37495340.

The previous prime is 56243009. The next prime is 56243029. The reversal of 56243013 is 31034265.

It is a happy number.

56243013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56243013 - 2² = 56243009 is a prime.

It is a super-2 number, since 2×56243013² = 6326553022636338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56243003) 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 3 ways as a sum of consecutive naturals, for example, 9373833 + ... + 9373838.

It is an arithmetic number, because the mean of its divisors is an integer number (18747672).

Almost surely, 2^56243013 is an apocalyptic number.

It is an amenable number.

56243013 is a deficient number, since it is larger than the sum of its proper divisors (18747675).

56243013 is a wasteful number, since it uses less digits than its factorization.

56243013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18747674.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 56243013 is about 7499.5341855345. The cubic root of 56243013 is about 383.1388512317.

Adding to 56243013 its reverse (31034265), we get a palindrome (87277278).

The spelling of 56243013 in words is "fifty-six million, two hundred forty-three thousand, thirteen".