22055717 has 2 divisors, whose sum is σ = 22055718. Its totient is φ = 22055716.

The previous prime is 22055711. The next prime is 22055729. The reversal of 22055717 is 71755022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12013156 + 10042561 = 3466^2 + 3169^2 .

It is a cyclic number.

It is not a de Polignac number, because 22055717 - 2⁴ = 22055701 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22055717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22055711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11027858 + 11027859.

It is an arithmetic number, because the mean of its divisors is an integer number (11027859).

Almost surely, 2^22055717 is an apocalyptic number.

It is an amenable number.

22055717 is a deficient number, since it is larger than the sum of its proper divisors (1).

22055717 is an equidigital number, since it uses as much as digits as its factorization.

22055717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 22055717 is about 4696.3514561838. The cubic root of 22055717 is about 280.4402809647.

The spelling of 22055717 in words is "twenty-two million, fifty-five thousand, seven hundred seventeen".