56045520 has 210 divisors, whose sum is σ = 201874914. Its totient is φ = 14463360.

The previous prime is 56045513. The next prime is 56045537. The reversal of 56045520 is 2554065.

56045520 is a `hidden beast` number, since 5 + 604 + 5 + 52 + 0 = 666.

It can be written as a sum of positive squares in only one way, i.e., 44836416 + 11209104 = 6696^2 + 3348^2 .

It is a super-2 number, since 2×56045520² = 6282200624140800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 1807905 + ... + 1807935.

Almost surely, 2^56045520 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 56045520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100937457).

56045520 is an abundant number, since it is smaller than the sum of its proper divisors (145829394).

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

56045520 is an equidigital number, since it uses as much as digits as its factorization.

56045520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 56045520 is about 7486.3555886693. The cubic root of 56045520 is about 382.6898711312.

Adding to 56045520 its reverse (2554065), we get a palindrome (58599585).

It can be divided in two parts, 56045 and 520, that added together give a palindrome (56565).

The spelling of 56045520 in words is "fifty-six million, forty-five thousand, five hundred twenty".