800520056 has 72 divisors (see below), whose sum is σ = 1782045720. Its totient is φ = 336143808.

The previous prime is 800520047. The next prime is 800520067. The reversal of 800520056 is 650025008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1100765 + ... + 1101491.

It is an arithmetic number, because the mean of its divisors is an integer number (24750635).

Almost surely, 2^800520056 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 800520056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891022860).

800520056 is an abundant number, since it is smaller than the sum of its proper divisors (981525664).

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

800520056 is a wasteful number, since it uses less digits than its factorization.

800520056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 800520056 is about 28293.4631319674. The cubic root of 800520056 is about 928.5188803264.

The spelling of 800520056 in words is "eight hundred million, five hundred twenty thousand, fifty-six".