551665227 has 16 divisors (see below), whose sum is σ = 764547840. Its totient is φ = 353519712.

The previous prime is 551665211. The next prime is 551665229. The reversal of 551665227 is 722566155.

551665227 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 551665227 - 2⁴ = 551665211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551665229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20727 + ... + 39152.

It is an arithmetic number, because the mean of its divisors is an integer number (47784240).

Almost surely, 2^551665227 is an apocalyptic number.

551665227 is a deficient number, since it is larger than the sum of its proper divisors (212882613).

551665227 is a wasteful number, since it uses less digits than its factorization.

551665227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60002.

The product of its digits is 126000, while the sum is 39.

The square root of 551665227 is about 23487.5547258543. The cubic root of 551665227 is about 820.1473198528.

The spelling of 551665227 in words is "five hundred fifty-one million, six hundred sixty-five thousand, two hundred twenty-seven".