22155317 has 2 divisors, whose sum is σ = 22155318. Its totient is φ = 22155316.

The previous prime is 22155299. The next prime is 22155361. The reversal of 22155317 is 71355122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11566801 + 10588516 = 3401^2 + 3254^2 .

It is a cyclic number.

It is not a de Polignac number, because 22155317 - 2⁶ = 22155253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22158317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11077658 + 11077659.

It is an arithmetic number, because the mean of its divisors is an integer number (11077659).

Almost surely, 2^22155317 is an apocalyptic number.

It is an amenable number.

22155317 is a deficient number, since it is larger than the sum of its proper divisors (1).

22155317 is an equidigital number, since it uses as much as digits as its factorization.

22155317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2100, while the sum is 26.

The square root of 22155317 is about 4706.9434880823. The cubic root of 22155317 is about 280.8617878833.

The spelling of 22155317 in words is "twenty-two million, one hundred fifty-five thousand, three hundred seventeen".