550505556 has 36 divisors (see below), whose sum is σ = 1410624852. Its totient is φ = 180987264.

The previous prime is 550505539. The next prime is 550505591. The reversal of 550505556 is 655505055.

550505556 is a `hidden beast` number, since 5 + 50 + 50 + 5 + 556 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 320983056 + 229522500 = 17916^2 + 15150^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 550505556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102111 + ... + 107366.

Almost surely, 2^550505556 is an apocalyptic number.

It is an amenable number.

550505556 is an abundant number, since it is smaller than the sum of its proper divisors (860119296).

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

550505556 is a wasteful number, since it uses less digits than its factorization.

550505556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209560 (or 209555 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The square root of 550505556 is about 23462.8548135132. The cubic root of 550505556 is about 819.5722317735.

It can be divided in two parts, 55050 and 5556, that added together give a palindrome (60606).

The spelling of 550505556 in words is "five hundred fifty million, five hundred five thousand, five hundred fifty-six".