22209529 has 2 divisors, whose sum is σ = 22209530. Its totient is φ = 22209528.

The previous prime is 22209527. The next prime is 22209587. The reversal of 22209529 is 92590222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20684304 + 1525225 = 4548^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 22209529 - 2¹ = 22209527 is a prime.

Together with 22209527, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22209529.

It is not a weakly prime, because it can be changed into another prime (22209527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11104764 + 11104765.

It is an arithmetic number, because the mean of its divisors is an integer number (11104765).

Almost surely, 2^22209529 is an apocalyptic number.

It is an amenable number.

22209529 is a deficient number, since it is larger than the sum of its proper divisors (1).

22209529 is an equidigital number, since it uses as much as digits as its factorization.

22209529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 22209529 is about 4712.6986960764. The cubic root of 22209529 is about 281.0906821809.

The spelling of 22209529 in words is "twenty-two million, two hundred nine thousand, five hundred twenty-nine".