56445568 has 32 divisors (see below), whose sum is σ = 114052320. Its totient is φ = 27820800.

The previous prime is 56445563. The next prime is 56445577. The reversal of 56445568 is 86554465.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×56445568² = 6372204293685248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56445563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5983 + ... + 12193.

It is an arithmetic number, because the mean of its divisors is an integer number (3564135).

Almost surely, 2^56445568 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 56445568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57026160).

56445568 is an abundant number, since it is smaller than the sum of its proper divisors (57606752).

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

56445568 is an equidigital number, since it uses as much as digits as its factorization.

56445568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296 (or 6284 counting only the distinct ones).

The product of its digits is 576000, while the sum is 43.

The square root of 56445568 is about 7513.0265539262. The cubic root of 56445568 is about 383.5982488051.

The spelling of 56445568 in words is "fifty-six million, four hundred forty-five thousand, five hundred sixty-eight".