56555013831 has 4 divisors (see below), whose sum is σ = 75406685112. Its totient is φ = 37703342552.

The previous prime is 56555013793. The next prime is 56555013869. The reversal of 56555013831 is 13831055565.

56555013831 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.

It is an interprime number because it is at equal distance from previous prime (56555013793) and next prime (56555013869).

It is a cyclic number.

It is not a de Polignac number, because 56555013831 - 2³¹ = 54407530183 is a prime.

It is a super-2 number, since 2×56555013831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56555013131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9425835636 + ... + 9425835641.

It is an arithmetic number, because the mean of its divisors is an integer number (18851671278).

Almost surely, 2^56555013831 is an apocalyptic number.

56555013831 is a deficient number, since it is larger than the sum of its proper divisors (18851671281).

56555013831 is a wasteful number, since it uses less digits than its factorization.

56555013831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18851671280.

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 56555013831 in words is "fifty-six billion, five hundred fifty-five million, thirteen thousand, eight hundred thirty-one".