56444520 has 128 divisors (see below), whose sum is σ = 188023680. Its totient is φ = 13440000.

The previous prime is 56444519. The next prime is 56444561. The reversal of 56444520 is 2544465.

56444520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80170 + ... + 80870.

It is an arithmetic number, because the mean of its divisors is an integer number (1468935).

Almost surely, 2^56444520 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 56444520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94011840).

56444520 is an abundant number, since it is smaller than the sum of its proper divisors (131579160).

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

56444520 is a wasteful number, since it uses less digits than its factorization.

56444520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 56444520 is about 7512.9568080750. The cubic root of 56444520 is about 383.5958747572.

Adding to 56444520 its reverse (2544465), we get a palindrome (58988985).

It can be divided in two parts, 564445 and 20, that added together give a palindrome (564465).

The spelling of 56444520 in words is "fifty-six million, four hundred forty-four thousand, five hundred twenty".