56204005631 has 4 divisors (see below), whose sum is σ = 56449438200. Its totient is φ = 55958573064.

The previous prime is 56204005607. The next prime is 56204005681. The reversal of 56204005631 is 13650040265.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56204005631 - 2⁶ = 56204005567 is a prime.

It is a super-2 number, since 2×56204005631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56204005681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122715941 + ... + 122716398.

It is an arithmetic number, because the mean of its divisors is an integer number (14112359550).

Almost surely, 2^56204005631 is an apocalyptic number.

56204005631 is a deficient number, since it is larger than the sum of its proper divisors (245432569).

56204005631 is a wasteful number, since it uses less digits than its factorization.

56204005631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245432568.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 56204005631 its reverse (13650040265), we get a palindrome (69854045896).

The spelling of 56204005631 in words is "fifty-six billion, two hundred four million, five thousand, six hundred thirty-one".