55028712 has 32 divisors (see below), whose sum is σ = 144813600. Its totient is φ = 17377344.

The previous prime is 55028669. The next prime is 55028713. The reversal of 55028712 is 21782055.

It is a self number, because there is not a number n which added to its sum of digits gives 55028712.

It is not an unprimeable number, because it can be changed into a prime (55028713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59883 + ... + 60794.

It is an arithmetic number, because the mean of its divisors is an integer number (4525425).

Almost surely, 2^55028712 is an apocalyptic number.

It is an amenable number.

55028712 is an abundant number, since it is smaller than the sum of its proper divisors (89784888).

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

55028712 is a wasteful number, since it uses less digits than its factorization.

55028712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120705 (or 120701 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 55028712 is about 7418.1339971721. The cubic root of 55028712 is about 380.3614105465.

The spelling of 55028712 in words is "fifty-five million, twenty-eight thousand, seven hundred twelve".