22097539 has 2 divisors, whose sum is σ = 22097540. Its totient is φ = 22097538.

The previous prime is 22097521. The next prime is 22097561. The reversal of 22097539 is 93579022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22097539 - 2¹⁵ = 22064771 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22097498 and 22097507.

It is not a weakly prime, because it can be changed into another prime (22097519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11048769 + 11048770.

It is an arithmetic number, because the mean of its divisors is an integer number (11048770).

Almost surely, 2^22097539 is an apocalyptic number.

22097539 is a deficient number, since it is larger than the sum of its proper divisors (1).

22097539 is an equidigital number, since it uses as much as digits as its factorization.

22097539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 22097539 is about 4700.8019528587. The cubic root of 22097539 is about 280.6174257839.

The spelling of 22097539 in words is "twenty-two million, ninety-seven thousand, five hundred thirty-nine".