52220224 has 56 divisors (see below), whose sum is σ = 121359168. Its totient is φ = 21826560.

The previous prime is 52220219. The next prime is 52220249. The reversal of 52220224 is 42202225.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×52220224² = 5453903589220352, which contains 22 as substring.

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, 16947 + ... + 19789.

It is an arithmetic number, because the mean of its divisors is an integer number (2167128).

Almost surely, 2^52220224 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 52220224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60679584).

52220224 is an abundant number, since it is smaller than the sum of its proper divisors (69138944).

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

52220224 is a wasteful number, since it uses less digits than its factorization.

52220224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903 (or 2893 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 52220224 is about 7226.3562048933. The cubic root of 52220224 is about 373.7772893129. Note that the first 3 decimals are identical.

Adding to 52220224 its reverse (42202225), we get a palindrome (94422449).

The spelling of 52220224 in words is "fifty-two million, two hundred twenty thousand, two hundred twenty-four".