22269521 has 2 divisors, whose sum is σ = 22269522. Its totient is φ = 22269520.

The previous prime is 22269517. The next prime is 22269529. The reversal of 22269521 is 12596222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22137025 + 132496 = 4705^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 22269521 - 2² = 22269517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22269529) 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, 11134760 + 11134761.

It is an arithmetic number, because the mean of its divisors is an integer number (11134761).

Almost surely, 2^22269521 is an apocalyptic number.

It is an amenable number.

22269521 is a deficient number, since it is larger than the sum of its proper divisors (1).

22269521 is an equidigital number, since it uses as much as digits as its factorization.

22269521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 22269521 is about 4719.0593342318. The cubic root of 22269521 is about 281.3435470874.

The spelling of 22269521 in words is "twenty-two million, two hundred sixty-nine thousand, five hundred twenty-one".