56447560 has 32 divisors (see below), whose sum is σ = 136778040. Its totient is φ = 20841984.

The previous prime is 56447557. The next prime is 56447579. The reversal of 56447560 is 6574465.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36893476 + 19554084 = 6074^2 + 4422^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53757 + ... + 54796.

Almost surely, 2^56447560 is an apocalyptic number.

It is an amenable number.

56447560 is an abundant number, since it is smaller than the sum of its proper divisors (80330480).

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

56447560 is a wasteful number, since it uses less digits than its factorization.

56447560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108577 (or 108573 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 56447560 is about 7513.1591224997. The cubic root of 56447560 is about 383.6027612274.

The spelling of 56447560 in words is "fifty-six million, four hundred forty-seven thousand, five hundred sixty".