56021760 has 144 divisors (see below), whose sum is σ = 198922080. Its totient is φ = 14929920.

The previous prime is 56021753. The next prime is 56021761. The reversal of 56021760 is 6712065.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is not an unprimeable number, because it can be changed into a prime (56021761) 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 15 ways as a sum of consecutive naturals, for example, 33750 + ... + 35370.

Almost surely, 2^56021760 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 56021760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99461040).

56021760 is an abundant number, since it is smaller than the sum of its proper divisors (142900320).

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

56021760 is a wasteful number, since it uses less digits than its factorization.

56021760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 56021760 is about 7484.7685334952. The cubic root of 56021760 is about 382.6357841643.

The spelling of 56021760 in words is "fifty-six million, twenty-one thousand, seven hundred sixty".