56515494431 has 8 divisors (see below), whose sum is σ = 61976060928. Its totient is φ = 51108727000.

The previous prime is 56515494367. The next prime is 56515494439. The reversal of 56515494431 is 13449451565.

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 56515494431 - 2⁶ = 56515494367 is a prime.

It is a super-2 number, since 2×56515494431² (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 (56515494439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13447565 + ... + 13451766.

It is an arithmetic number, because the mean of its divisors is an integer number (7747007616).

Almost surely, 2^56515494431 is an apocalyptic number.

56515494431 is a deficient number, since it is larger than the sum of its proper divisors (5460566497).

56515494431 is a wasteful number, since it uses less digits than its factorization.

56515494431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26899533.

The product of its digits is 1296000, while the sum is 47.

The spelling of 56515494431 in words is "fifty-six billion, five hundred fifteen million, four hundred ninety-four thousand, four hundred thirty-one".