550551155 has 32 divisors (see below), whose sum is σ = 826219008. Its totient is φ = 342144000.

The previous prime is 550551151. The next prime is 550551187. The reversal of 550551155 is 551155055.

550551155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 550551155 - 2² = 550551151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550551151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133880 + ... + 137930.

It is an arithmetic number, because the mean of its divisors is an integer number (25819344).

Almost surely, 2^550551155 is an apocalyptic number.

550551155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

550551155 is a deficient number, since it is larger than the sum of its proper divisors (275667853).

550551155 is a wasteful number, since it uses less digits than its factorization.

550551155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427.

The product of its (nonzero) digits is 15625, while the sum is 32.

The square root of 550551155 is about 23463.8265208384. The cubic root of 550551155 is about 819.5948598481.

The spelling of 550551155 in words is "five hundred fifty million, five hundred fifty-one thousand, one hundred fifty-five".