55548224 has 42 divisors (see below), whose sum is σ = 114692430. Its totient is φ = 26661376.

The previous prime is 55548203. The next prime is 55548277. The reversal of 55548224 is 42284555.

It can be written as a sum of positive squares in 3 ways, for example, as 33269824 + 22278400 = 5768^2 + 4720^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321002 + ... + 321174.

Almost surely, 2^55548224 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 55548224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57346215).

55548224 is an abundant number, since it is smaller than the sum of its proper divisors (59144206).

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

55548224 is an equidigital number, since it uses as much as digits as its factorization.

55548224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 204 counting only the distinct ones).

The product of its digits is 64000, while the sum is 35.

The square root of 55548224 is about 7453.0680930742. The cubic root of 55548224 is about 381.5546283739.

The spelling of 55548224 in words is "fifty-five million, five hundred forty-eight thousand, two hundred twenty-four".