550550550 has 48 divisors (see below), whose sum is σ = 1489493952. Its totient is φ = 133466400.

The previous prime is 550550531. The next prime is 550550551. The reversal of 550550550 is 55055055.

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

550550550 is a modest number, since divided by 550550 gives 550 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550550551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165184 + ... + 168483.

It is an arithmetic number, because the mean of its divisors is an integer number (31031124).

Almost surely, 2^550550550 is an apocalyptic number.

550550550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

550550550 is an abundant number, since it is smaller than the sum of its proper divisors (938943402).

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

550550550 is a wasteful number, since it uses less digits than its factorization.

550550550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333693 (or 333688 counting only the distinct ones).

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

The square root of 550550550 is about 23463.8136286495. The cubic root of 550550550 is about 819.5945596308.

The spelling of 550550550 in words is "five hundred fifty million, five hundred fifty thousand, five hundred fifty".