550505155 has 16 divisors (see below), whose sum is σ = 677623968. Its totient is φ = 429088000.

The previous prime is 550505149. The next prime is 550505171. The reversal of 550505155 is 551505055.

It is not a de Polignac number, because 550505155 - 2³ = 550505147 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216240 + ... + 218770.

It is an arithmetic number, because the mean of its divisors is an integer number (42351498).

Almost surely, 2^550505155 is an apocalyptic number.

550505155 is a deficient number, since it is larger than the sum of its proper divisors (127118813).

550505155 is a wasteful number, since it uses less digits than its factorization.

550505155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638.

The product of its (nonzero) digits is 15625, while the sum is 31.

The square root of 550505155 is about 23462.8462680895. The cubic root of 550505155 is about 819.5720327755.

The spelling of 550505155 in words is "five hundred fifty million, five hundred five thousand, one hundred fifty-five".