556331856 has 80 divisors (see below), whose sum is σ = 1545139200. Its totient is φ = 171932544.

The previous prime is 556331833. The next prime is 556331861. The reversal of 556331856 is 658133655.

It is a happy number.

It is a congruent number.

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, 36375 + ... + 49353.

It is an arithmetic number, because the mean of its divisors is an integer number (19314240).

Almost surely, 2^556331856 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 556331856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (772569600).

556331856 is an abundant number, since it is smaller than the sum of its proper divisors (988807344).

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

556331856 is a wasteful number, since it uses less digits than its factorization.

556331856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13056 (or 13050 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

The square root of 556331856 is about 23586.6881100336. The cubic root of 556331856 is about 822.4534175384.

The spelling of 556331856 in words is "five hundred fifty-six million, three hundred thirty-one thousand, eight hundred fifty-six".