56021120 has 128 divisors (see below), whose sum is σ = 149817600. Its totient is φ = 19906560.

The previous prime is 56021111. The next prime is 56021143. The reversal of 56021120 is 2112065.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206585 + ... + 206855.

It is an arithmetic number, because the mean of its divisors is an integer number (1170450).

Almost surely, 2^56021120 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 56021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74908800).

56021120 is an abundant number, since it is smaller than the sum of its proper divisors (93796480).

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

56021120 is a wasteful number, since it uses less digits than its factorization.

56021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 56021120 is about 7484.7257798800. The cubic root of 56021120 is about 382.6343270648.

Adding to 56021120 its reverse (2112065), we get a palindrome (58133185).

The spelling of 56021120 in words is "fifty-six million, twenty-one thousand, one hundred twenty".