22452289 has 2 divisors, whose sum is σ = 22452290. Its totient is φ = 22452288.

The previous prime is 22452251. The next prime is 22452361. The reversal of 22452289 is 98225422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22278400 + 173889 = 4720^2 + 417^2 .

It is a cyclic number.

It is not a de Polignac number, because 22452289 - 2¹⁷ = 22321217 is a prime.

It is not a weakly prime, because it can be changed into another prime (22452239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11226144 + 11226145.

It is an arithmetic number, because the mean of its divisors is an integer number (11226145).

Almost surely, 2^22452289 is an apocalyptic number.

It is an amenable number.

22452289 is a deficient number, since it is larger than the sum of its proper divisors (1).

22452289 is an equidigital number, since it uses as much as digits as its factorization.

22452289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 34.

The square root of 22452289 is about 4738.3846403600. The cubic root of 22452289 is about 282.1111218088. Note that the first 4 decimals are identical.

The spelling of 22452289 in words is "twenty-two million, four hundred fifty-two thousand, two hundred eighty-nine".