550055556 has 24 divisors (see below), whose sum is σ = 1426070240. Its totient is φ = 183351816.

The previous prime is 550055521. The next prime is 550055573. The reversal of 550055556 is 655550055.

550055556 is a `hidden beast` number, since 5 + 50 + 0 + 55 + 556 = 666.

It is a super-2 number, since 2×550055556² = 605122229372938272, which contains 22 as substring.

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 550055556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2546446 + ... + 2546661.

Almost surely, 2^550055556 is an apocalyptic number.

It is an amenable number.

550055556 is an abundant number, since it is smaller than the sum of its proper divisors (876014684).

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

550055556 is a wasteful number, since it uses less digits than its factorization.

550055556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5093120 (or 5093112 counting only the distinct ones).

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

The square root of 550055556 is about 23453.2632271077. The cubic root of 550055556 is about 819.3488564673.

The spelling of 550055556 in words is "five hundred fifty million, fifty-five thousand, five hundred fifty-six".