56523533220 has 288 divisors, whose sum is σ = 219541061376. Its totient is φ = 11427609600.

The previous prime is 56523533207. The next prime is 56523533263. The reversal of 56523533220 is 2233532565.

56523533220 is a `hidden beast` number, since 56 + 52 + 3 + 533 + 2 + 20 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 95 ways as a sum of consecutive naturals, for example, 457710 + ... + 567930.

It is an arithmetic number, because the mean of its divisors is an integer number (762295352).

Almost surely, 2^56523533220 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 56523533220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109770530688).

56523533220 is an abundant number, since it is smaller than the sum of its proper divisors (163017528156).

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

56523533220 is a wasteful number, since it uses less digits than its factorization.

56523533220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110291 (or 110286 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 36.

The spelling of 56523533220 in words is "fifty-six billion, five hundred twenty-three million, five hundred thirty-three thousand, two hundred twenty".