556181632 has 32 divisors (see below), whose sum is σ = 1137974220. Its totient is φ = 270572544.

The previous prime is 556181609. The next prime is 556181657. The reversal of 556181632 is 236181655.

It can be written as a sum of positive squares in 2 ways, for example, as 418447936 + 137733696 = 20456^2 + 11736^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 556181591 and 556181600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53983 + ... + 63454.

Almost surely, 2^556181632 is an apocalyptic number.

It is an amenable number.

556181632 is an abundant number, since it is smaller than the sum of its proper divisors (581792588).

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

556181632 is a wasteful number, since it uses less digits than its factorization.

556181632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117488 (or 117476 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 556181632 is about 23583.5033869016. The cubic root of 556181632 is about 822.3793829712.

The spelling of 556181632 in words is "five hundred fifty-six million, one hundred eighty-one thousand, six hundred thirty-two".