55543224 has 32 divisors (see below), whose sum is σ = 151482240. Its totient is φ = 16831200.

The previous prime is 55543219. The next prime is 55543231. The reversal of 55543224 is 42234555.

It is a junction number, because it is equal to n+sod(n) for n = 55543191 and 55543200.

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, 104932 + ... + 105459.

It is an arithmetic number, because the mean of its divisors is an integer number (4733820).

Almost surely, 2^55543224 is an apocalyptic number.

It is an amenable number.

55543224 is an abundant number, since it is smaller than the sum of its proper divisors (95939016).

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

55543224 is a wasteful number, since it uses less digits than its factorization.

55543224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210411 (or 210407 counting only the distinct ones).

The product of its digits is 24000, while the sum is 30.

The square root of 55543224 is about 7452.7326531951. The cubic root of 55543224 is about 381.5431798807.

Adding to 55543224 its reverse (42234555), we get a palindrome (97777779).

It can be divided in two parts, 5554 and 3224, that added together give a palindrome (8778).

The spelling of 55543224 in words is "fifty-five million, five hundred forty-three thousand, two hundred twenty-four".