222520450 has 12 divisors (see below), whose sum is σ = 413888130. Its totient is φ = 89008160.

The previous prime is 222520439. The next prime is 222520453. The reversal of 222520450 is 54025222.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 176863401 + 45657049 = 13299^2 + 6757^2 .

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 5 ways as a sum of consecutive naturals, for example, 2225155 + ... + 2225254.

Almost surely, 2^222520450 is an apocalyptic number.

222520450 is a deficient number, since it is larger than the sum of its proper divisors (191367680).

222520450 is a wasteful number, since it uses less digits than its factorization.

222520450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450421 (or 4450416 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 222520450 is about 14917.1193599837. The cubic root of 222520450 is about 605.9777010751.

Adding to 222520450 its reverse (54025222), we get a palindrome (276545672).

The spelling of 222520450 in words is "two hundred twenty-two million, five hundred twenty thousand, four hundred fifty".