22508117 has 2 divisors, whose sum is σ = 22508118. Its totient is φ = 22508116.

The previous prime is 22508107. The next prime is 22508137. The reversal of 22508117 is 71180522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21613201 + 894916 = 4649^2 + 946^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22508117 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 (22508107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11254058 + 11254059.

It is an arithmetic number, because the mean of its divisors is an integer number (11254059).

Almost surely, 2^22508117 is an apocalyptic number.

It is an amenable number.

22508117 is a deficient number, since it is larger than the sum of its proper divisors (1).

22508117 is an equidigital number, since it uses as much as digits as its factorization.

22508117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 22508117 is about 4744.2720200258. The cubic root of 22508117 is about 282.3447529803.

Adding to 22508117 its reverse (71180522), we get a palindrome (93688639).

The spelling of 22508117 in words is "twenty-two million, five hundred eight thousand, one hundred seventeen".