556556168 has 64 divisors (see below), whose sum is σ = 1248912000. Its totient is φ = 227469312.

The previous prime is 556556167. The next prime is 556556171. The reversal of 556556168 is 861655655.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (556556167) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 132728 + ... + 136856.

It is an arithmetic number, because the mean of its divisors is an integer number (19514250).

Almost surely, 2^556556168 is an apocalyptic number.

556556168 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556556168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624456000).

556556168 is an abundant number, since it is smaller than the sum of its proper divisors (692355832).

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

556556168 is a wasteful number, since it uses less digits than its factorization.

556556168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4254 (or 4250 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 47.

The square root of 556556168 is about 23591.4426858554. The cubic root of 556556168 is about 822.5639399300.

The spelling of 556556168 in words is "five hundred fifty-six million, five hundred fifty-six thousand, one hundred sixty-eight".