56554520 has 64 divisors (see below), whose sum is σ = 140659200. Its totient is φ = 20292480.

The previous prime is 56554501. The next prime is 56554523. The reversal of 56554520 is 2545565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56554523) 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, 33947 + ... + 35573.

It is an arithmetic number, because the mean of its divisors is an integer number (2197800).

Almost surely, 2^56554520 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 56554520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70329600).

56554520 is an abundant number, since it is smaller than the sum of its proper divisors (84104680).

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

56554520 is a wasteful number, since it uses less digits than its factorization.

56554520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728 (or 1724 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 56554520 is about 7520.2739311810. The cubic root of 56554520 is about 383.8448990227.

It can be divided in two parts, 565545 and 20, that added together give a palindrome (565565).

The spelling of 56554520 in words is "fifty-six million, five hundred fifty-four thousand, five hundred twenty".