56755620 has 96 divisors (see below), whose sum is σ = 179571840. Its totient is φ = 14878080.

The previous prime is 56755613. The next prime is 56755631. The reversal of 56755620 is 2655765.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32079 + ... + 33801.

It is an arithmetic number, because the mean of its divisors is an integer number (1870540).

Almost surely, 2^56755620 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 56755620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89785920).

56755620 is an abundant number, since it is smaller than the sum of its proper divisors (122816220).

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

56755620 is a wasteful number, since it uses less digits than its factorization.

56755620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 56755620 is about 7533.6325899263. The cubic root of 56755620 is about 384.2993271614.

It can be divided in two parts, 56755 and 620, that added together give a palindrome (57375).

The spelling of 56755620 in words is "fifty-six million, seven hundred fifty-five thousand, six hundred twenty".