556532820 has 72 divisors (see below), whose sum is σ = 1713382944. Its totient is φ = 146190528.

The previous prime is 556532783. The next prime is 556532839. The reversal of 556532820 is 28235655.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11014 + ... + 35133.

Almost surely, 2^556532820 is an apocalyptic number.

It is an amenable number.

556532820 is an abundant number, since it is smaller than the sum of its proper divisors (1156850124).

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

556532820 is a wasteful number, since it uses less digits than its factorization.

556532820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46229 (or 46224 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 556532820 is about 23590.9478402204. The cubic root of 556532820 is about 822.5524373525.

The spelling of 556532820 in words is "five hundred fifty-six million, five hundred thirty-two thousand, eight hundred twenty".