222520452 has 72 divisors (see below), whose sum is σ = 652266048. Its totient is φ = 57794880.

The previous prime is 222520439. The next prime is 222520453. The reversal of 222520452 is 254025222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222520453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 783 + ... + 21110.

Almost surely, 2^222520452 is an apocalyptic number.

222520452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222520452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326133024).

222520452 is an abundant number, since it is smaller than the sum of its proper divisors (429745596).

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

222520452 is a wasteful number, since it uses less digits than its factorization.

222520452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21929 (or 21916 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 222520452 is about 14917.1194270208. The cubic root of 222520452 is about 605.9777028906.

Adding to 222520452 its reverse (254025222), we get a palindrome (476545674).

The spelling of 222520452 in words is "two hundred twenty-two million, five hundred twenty thousand, four hundred fifty-two".