551228 has 12 divisors (see below), whose sum is σ = 1015560. Its totient is φ = 261072.

The previous prime is 551219. The next prime is 551231. The reversal of 551228 is 822155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3551 + ... + 3702.

It is an arithmetic number, because the mean of its divisors is an integer number (84630).

2⁵⁵¹²²⁸ is an apocalyptic number.

It is an amenable number.

551228 is a deficient number, since it is larger than the sum of its proper divisors (464332).

551228 is a wasteful number, since it uses less digits than its factorization.

551228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7276 (or 7274 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 551228 is about 742.4473045274. The cubic root of 551228 is about 81.9930590992.

The spelling of 551228 in words is "five hundred fifty-one thousand, two hundred twenty-eight".