26315117 has 2 divisors, whose sum is σ = 26315118. Its totient is φ = 26315116.

The previous prime is 26315089. The next prime is 26315129. The reversal of 26315117 is 71151362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16760836 + 9554281 = 4094^2 + 3091^2 .

It is a cyclic number.

It is not a de Polignac number, because 26315117 - 2⁶ = 26315053 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 (26315147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13157558 + 13157559.

It is an arithmetic number, because the mean of its divisors is an integer number (13157559).

Almost surely, 2^26315117 is an apocalyptic number.

It is an amenable number.

26315117 is a deficient number, since it is larger than the sum of its proper divisors (1).

26315117 is an equidigital number, since it uses as much as digits as its factorization.

26315117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 26.

The square root of 26315117 is about 5129.8262153800. The cubic root of 26315117 is about 297.4416409784.

Adding to 26315117 its reverse (71151362), we get a palindrome (97466479).

The spelling of 26315117 in words is "twenty-six million, three hundred fifteen thousand, one hundred seventeen".