22105597 has 2 divisors, whose sum is σ = 22105598. Its totient is φ = 22105596.

The previous prime is 22105591. The next prime is 22105609. The reversal of 22105597 is 79550122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20602521 + 1503076 = 4539^2 + 1226^2 .

It is a cyclic number.

It is not a de Polignac number, because 22105597 - 2⁷ = 22105469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22105591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11052798 + 11052799.

It is an arithmetic number, because the mean of its divisors is an integer number (11052799).

Almost surely, 2^22105597 is an apocalyptic number.

It is an amenable number.

22105597 is a deficient number, since it is larger than the sum of its proper divisors (1).

22105597 is an equidigital number, since it uses as much as digits as its factorization.

22105597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 22105597 is about 4701.6589625365. The cubic root of 22105597 is about 280.6515312472.

The spelling of 22105597 in words is "twenty-two million, one hundred five thousand, five hundred ninety-seven".