26516317 has 2 divisors, whose sum is σ = 26516318. Its totient is φ = 26516316.

The previous prime is 26516297. The next prime is 26516323. The reversal of 26516317 is 71361562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26429881 + 86436 = 5141^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 26516317 - 2²³ = 18127709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26516327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13258158 + 13258159.

It is an arithmetic number, because the mean of its divisors is an integer number (13258159).

Almost surely, 2^26516317 is an apocalyptic number.

It is an amenable number.

26516317 is a deficient number, since it is larger than the sum of its proper divisors (1).

26516317 is an equidigital number, since it uses as much as digits as its factorization.

26516317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 26516317 is about 5149.3996737484. The cubic root of 26516317 is about 298.1977764627.

Adding to 26516317 its reverse (71361562), we get a palindrome (97877879).

The spelling of 26516317 in words is "twenty-six million, five hundred sixteen thousand, three hundred seventeen".