22530449 has 2 divisors, whose sum is σ = 22530450. Its totient is φ = 22530448.

The previous prime is 22530379. The next prime is 22530451. The reversal of 22530449 is 94403522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22420225 + 110224 = 4735^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 22530449 - 2¹² = 22526353 is a prime.

It is a super-2 number, since 2×22530449² = 1015242264283202, which contains 22 as substring.

Together with 22530451, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 12.

It is not a weakly prime, because it can be changed into another prime (22535449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11265224 + 11265225.

It is an arithmetic number, because the mean of its divisors is an integer number (11265225).

Almost surely, 2^22530449 is an apocalyptic number.

It is an amenable number.

22530449 is a deficient number, since it is larger than the sum of its proper divisors (1).

22530449 is an equidigital number, since it uses as much as digits as its factorization.

22530449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 22530449 is about 4746.6250115213. The cubic root of 22530449 is about 282.4381006208.

The spelling of 22530449 in words is "twenty-two million, five hundred thirty thousand, four hundred forty-nine".