55124224 has 18 divisors (see below), whose sum is σ = 110033630. Its totient is φ = 27561984.

The previous prime is 55124221. The next prime is 55124233. The reversal of 55124224 is 42242155.

It can be written as a sum of positive squares in only one way, i.e., 52301824 + 2822400 = 7232^2 + 1680^2 .

It is not an unprimeable number, because it can be changed into a prime (55124221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107409 + ... + 107920.

Almost surely, 2^55124224 is an apocalyptic number.

It is an amenable number.

55124224 is a deficient number, since it is larger than the sum of its proper divisors (54909406).

55124224 is an equidigital number, since it uses as much as digits as its factorization.

55124224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215345 (or 215331 counting only the distinct ones).

The product of its digits is 3200, while the sum is 25.

The square root of 55124224 is about 7424.5689437165. The cubic root of 55124224 is about 380.5813447074.

Adding to 55124224 its reverse (42242155), we get a palindrome (97366379).

The spelling of 55124224 in words is "fifty-five million, one hundred twenty-four thousand, two hundred twenty-four".