550228 has 24 divisors (see below), whose sum is σ = 1128512. Its totient is φ = 229824.

The previous prime is 550213. The next prime is 550241. The reversal of 550228 is 822055.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 550199 and 550208.

It is a congruent number.

It is an unprimeable number.

550228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 976 + ... + 1432.

2⁵⁵⁰²²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564256).

550228 is an abundant number, since it is smaller than the sum of its proper divisors (578284).

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

550228 is a wasteful number, since it uses less digits than its factorization.

550228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 550228 is about 741.7735503508. The cubic root of 550228 is about 81.9434470263.

The spelling of 550228 in words is "five hundred fifty thousand, two hundred twenty-eight".