556551166 has 8 divisors (see below), whose sum is σ = 842486040. Its totient is φ = 275722488.

The previous prime is 556551161. The next prime is 556551169. The reversal of 556551166 is 661155655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556551161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276276 + ... + 1276711.

It is an arithmetic number, because the mean of its divisors is an integer number (105310755).

Almost surely, 2^556551166 is an apocalyptic number.

556551166 is a deficient number, since it is larger than the sum of its proper divisors (285934874).

556551166 is a wasteful number, since it uses less digits than its factorization.

556551166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553098.

The product of its digits is 135000, while the sum is 40.

The square root of 556551166 is about 23591.3366726008. The cubic root of 556551166 is about 822.5614756821.

The spelling of 556551166 in words is "five hundred fifty-six million, five hundred fifty-one thousand, one hundred sixty-six".