55316224 has 36 divisors (see below), whose sum is σ = 114239160. Its totient is φ = 26700800.

The previous prime is 55316207. The next prime is 55316237. The reversal of 55316224 is 42261355.

It is a junction number, because it is equal to n+sod(n) for n = 55316192 and 55316201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3699 + ... + 11149.

It is an arithmetic number, because the mean of its divisors is an integer number (3173310).

Almost surely, 2^55316224 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 55316224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57119580).

55316224 is an abundant number, since it is smaller than the sum of its proper divisors (58922936).

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

55316224 is an equidigital number, since it uses as much as digits as its factorization.

55316224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7496 (or 7482 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 55316224 is about 7437.4877478891. The cubic root of 55316224 is about 381.0226929900.

Adding to 55316224 its reverse (42261355), we get a palindrome (97577579).

The spelling of 55316224 in words is "fifty-five million, three hundred sixteen thousand, two hundred twenty-four".