55228842 has 24 divisors (see below), whose sum is σ = 124866144. Its totient is φ = 17609064.

The previous prime is 55228829. The next prime is 55228843. The reversal of 55228842 is 24882255.

55228842 is a `hidden beast` number, since 552 + 28 + 84 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 55228797 and 55228806.

It is not an unprimeable number, because it can be changed into a prime (55228843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66288 + ... + 67115.

It is an arithmetic number, because the mean of its divisors is an integer number (5202756).

Almost surely, 2^55228842 is an apocalyptic number.

55228842 is an abundant number, since it is smaller than the sum of its proper divisors (69637302).

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

55228842 is a wasteful number, since it uses less digits than its factorization.

55228842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133434 (or 133431 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

The square root of 55228842 is about 7431.6109962780. The cubic root of 55228842 is about 380.8219557890.

The spelling of 55228842 in words is "fifty-five million, two hundred twenty-eight thousand, eight hundred forty-two".