55228 has 6 divisors (see below), whose sum is σ = 96656. Its totient is φ = 27612.

The previous prime is 55219. The next prime is 55229. The reversal of 55228 is 82255.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 55199 and 55208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6900 + ... + 6907.

2⁵⁵²²⁸ is an apocalyptic number.

It is an amenable number.

55228 is a deficient number, since it is larger than the sum of its proper divisors (41428).

55228 is a wasteful number, since it uses less digits than its factorization.

55228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13811 (or 13809 counting only the distinct ones).

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

The square root of 55228 is about 235.0063828920. The cubic root of 55228 is about 38.0820020485.

The spelling of 55228 in words is "fifty-five thousand, two hundred twenty-eight".