55086828 has 24 divisors (see below), whose sum is σ = 129329088. Its totient is φ = 18248976.

The previous prime is 55086793. The next prime is 55086839. The reversal of 55086828 is 82868055.

55086828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55086828.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12126 + ... + 16037.

It is an arithmetic number, because the mean of its divisors is an integer number (5388712).

Almost surely, 2^55086828 is an apocalyptic number.

It is an amenable number.

55086828 is an abundant number, since it is smaller than the sum of its proper divisors (74242260).

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

55086828 is a wasteful number, since it uses less digits than its factorization.

55086828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28333 (or 28331 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 55086828 is about 7422.0501210919. The cubic root of 55086828 is about 380.4952637403.

It can be divided in two parts, 550 and 86828, that added together give a palindrome (87378).

The spelling of 55086828 in words is "fifty-five million, eighty-six thousand, eight hundred twenty-eight".