56015560 has 32 divisors (see below), whose sum is σ = 127343160. Its totient is φ = 22173696.

The previous prime is 56015539. The next prime is 56015563. The reversal of 56015560 is 6551065.

It can be written as a sum of positive squares in 4 ways, for example, as 43639236 + 12376324 = 6606^2 + 3518^2 .

It is a super-2 number, since 2×56015560² = 6275485924227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56015563) 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, 3339 + ... + 11098.

Almost surely, 2^56015560 is an apocalyptic number.

It is an amenable number.

56015560 is an abundant number, since it is smaller than the sum of its proper divisors (71327600).

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

56015560 is a wasteful number, since it uses less digits than its factorization.

56015560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14545 (or 14541 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 56015560 is about 7484.3543475707. The cubic root of 56015560 is about 382.6216680459.

The spelling of 56015560 in words is "fifty-six million, fifteen thousand, five hundred sixty".