56531161300 has 18 divisors (see below), whose sum is σ = 122672620238. Its totient is φ = 22612464480.

The previous prime is 56531161231. The next prime is 56531161367. The reversal of 56531161300 is 316113565.

It can be written as a sum of positive squares in 3 ways, for example, as 9304917444 + 47226243856 = 96462^2 + 217316^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282655707 + ... + 282655906.

Almost surely, 2^56531161300 is an apocalyptic number.

56531161300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56531161300 is an abundant number, since it is smaller than the sum of its proper divisors (66141458938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56531161300 is a wasteful number, since it uses less digits than its factorization.

56531161300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565311627 (or 565311620 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

Adding to 56531161300 its reverse (316113565), we get a palindrome (56847274865).

The spelling of 56531161300 in words is "fifty-six billion, five hundred thirty-one million, one hundred sixty-one thousand, three hundred".