556505880 has 128 divisors (see below), whose sum is σ = 2020308480. Its totient is φ = 119715840.

The previous prime is 556505869. The next prime is 556505921. The reversal of 556505880 is 88505655.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5206 + ... + 33765.

It is an arithmetic number, because the mean of its divisors is an integer number (15783660).

Almost surely, 2^556505880 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 556505880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1010154240).

556505880 is an abundant number, since it is smaller than the sum of its proper divisors (1463802600).

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

556505880 is a wasteful number, since it uses less digits than its factorization.

556505880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39009 (or 39005 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 42.

The square root of 556505880 is about 23590.3768515893. The cubic root of 556505880 is about 822.5391647478.

The spelling of 556505880 in words is "five hundred fifty-six million, five hundred five thousand, eight hundred eighty".