52213224 has 96 divisors (see below), whose sum is σ = 157183200. Its totient is φ = 14394240.

The previous prime is 52213199. The next prime is 52213237. The reversal of 52213224 is 42231225.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 52213224.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33339 + ... + 34869.

It is an arithmetic number, because the mean of its divisors is an integer number (1637325).

Almost surely, 2^52213224 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 52213224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78591600).

52213224 is an abundant number, since it is smaller than the sum of its proper divisors (104969976).

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

52213224 is a wasteful number, since it uses less digits than its factorization.

52213224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 1572 counting only the distinct ones).

The product of its digits is 960, while the sum is 21.

The square root of 52213224 is about 7225.8718505105. The cubic root of 52213224 is about 373.7605872401.

Adding to 52213224 its reverse (42231225), we get a palindrome (94444449).

The spelling of 52213224 in words is "fifty-two million, two hundred thirteen thousand, two hundred twenty-four".