55628844 has 24 divisors (see below), whose sum is σ = 134277360. Its totient is φ = 17903424.

The previous prime is 55628843. The next prime is 55628851. The reversal of 55628844 is 44882655.

It is a junction number, because it is equal to n+sod(n) for n = 55628796 and 55628805.

It is not an unprimeable number, because it can be changed into a prime (55628843) 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 in 7 ways as a sum of consecutive naturals, for example, 79579 + ... + 80274.

It is an arithmetic number, because the mean of its divisors is an integer number (5594890).

Almost surely, 2^55628844 is an apocalyptic number.

It is an amenable number.

55628844 is an abundant number, since it is smaller than the sum of its proper divisors (78648516).

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

55628844 is a wasteful number, since it uses less digits than its factorization.

55628844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159889 (or 159887 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 55628844 is about 7458.4746429816. The cubic root of 55628844 is about 381.7391291090.

The spelling of 55628844 in words is "fifty-five million, six hundred twenty-eight thousand, eight hundred forty-four".