56388580 has 48 divisors (see below), whose sum is σ = 125496000. Its totient is φ = 21223296.

The previous prime is 56388533. The next prime is 56388581. The reversal of 56388580 is 8588365.

It is not an unprimeable number, because it can be changed into a prime (56388581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67606 + ... + 68434.

It is an arithmetic number, because the mean of its divisors is an integer number (2614500).

Almost surely, 2^56388580 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56388580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62748000).

56388580 is an abundant number, since it is smaller than the sum of its proper divisors (69107420).

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

56388580 is a wasteful number, since it uses less digits than its factorization.

56388580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 56388580 is about 7509.2329834678. The cubic root of 56388580 is about 383.4691104820.

The spelling of 56388580 in words is "fifty-six million, three hundred eighty-eight thousand, five hundred eighty".