55522768 has 40 divisors (see below), whose sum is σ = 124162688. Its totient is φ = 23559552.

The previous prime is 55522729. The next prime is 55522787. The reversal of 55522768 is 86722555.

It is a self number, because there is not a number n which added to its sum of digits gives 55522768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9130 + ... + 13942.

Almost surely, 2^55522768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55522768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62081344).

55522768 is an abundant number, since it is smaller than the sum of its proper divisors (68639920).

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

55522768 is a wasteful number, since it uses less digits than its factorization.

55522768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931 (or 4925 counting only the distinct ones).

The product of its digits is 168000, while the sum is 40.

The square root of 55522768 is about 7451.3601442958. The cubic root of 55522768 is about 381.4963346488.

The spelling of 55522768 in words is "fifty-five million, five hundred twenty-two thousand, seven hundred sixty-eight".