55266828 has 12 divisors (see below), whose sum is σ = 128955960. Its totient is φ = 18422272.

The previous prime is 55266823. The next prime is 55266829. The reversal of 55266828 is 82866255.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55266828.

It is not an unprimeable number, because it can be changed into a prime (55266823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2302773 + ... + 2302796.

It is an arithmetic number, because the mean of its divisors is an integer number (10746330).

Almost surely, 2^55266828 is an apocalyptic number.

It is an amenable number.

55266828 is an abundant number, since it is smaller than the sum of its proper divisors (73689132).

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

55266828 is a wasteful number, since it uses less digits than its factorization.

55266828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4605576 (or 4605574 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 55266828 is about 7434.1662612562. The cubic root of 55266828 is about 380.9092446465.

The spelling of 55266828 in words is "fifty-five million, two hundred sixty-six thousand, eight hundred twenty-eight".