550055550 has 48 divisors (see below), whose sum is σ = 1488154752. Its totient is φ = 133346400.

The previous prime is 550055521. The next prime is 550055573. The reversal of 550055550 is 55550055.

550055550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×550055550² = 605122216171605000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165034 + ... + 168333.

It is an arithmetic number, because the mean of its divisors is an integer number (31003224).

Almost surely, 2^550055550 is an apocalyptic number.

550055550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

550055550 is an abundant number, since it is smaller than the sum of its proper divisors (938099202).

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

550055550 is a wasteful number, since it uses less digits than its factorization.

550055550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333393 (or 333388 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 30.

The square root of 550055550 is about 23453.2630991937. The cubic root of 550055550 is about 819.3488534882.

The spelling of 550055550 in words is "five hundred fifty million, fifty-five thousand, five hundred fifty".