22434521 has 2 divisors, whose sum is σ = 22434522. Its totient is φ = 22434520.

The previous prime is 22434491. The next prime is 22434539. The reversal of 22434521 is 12543422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19758025 + 2676496 = 4445^2 + 1636^2 .

It is a cyclic number.

It is not a de Polignac number, because 22434521 - 2⁶ = 22434457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22434551) 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, 11217260 + 11217261.

It is an arithmetic number, because the mean of its divisors is an integer number (11217261).

Almost surely, 2^22434521 is an apocalyptic number.

It is an amenable number.

22434521 is a deficient number, since it is larger than the sum of its proper divisors (1).

22434521 is an equidigital number, since it uses as much as digits as its factorization.

22434521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 23.

The square root of 22434521 is about 4736.5093687229. The cubic root of 22434521 is about 282.0366843613.

Adding to 22434521 its reverse (12543422), we get a palindrome (34977943).

The spelling of 22434521 in words is "twenty-two million, four hundred thirty-four thousand, five hundred twenty-one".