55989428 has 24 divisors (see below), whose sum is σ = 112516320. Its totient is φ = 24109920.

The previous prime is 55989403. The next prime is 55989431. The reversal of 55989428 is 82498955.

55989428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 32651 + ... + 34322.

It is an arithmetic number, because the mean of its divisors is an integer number (4688180).

Almost surely, 2^55989428 is an apocalyptic number.

It is an amenable number.

55989428 is an abundant number, since it is smaller than the sum of its proper divisors (56526892).

55989428 is a wasteful number, since it uses less digits than its factorization.

55989428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67007 (or 67005 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 50.

The square root of 55989428 is about 7482.6083687442. The cubic root of 55989428 is about 382.5621594340.

The spelling of 55989428 in words is "fifty-five million, nine hundred eighty-nine thousand, four hundred twenty-eight".