26065517 has 2 divisors, whose sum is σ = 26065518. Its totient is φ = 26065516.

The previous prime is 26065499. The next prime is 26065531. The reversal of 26065517 is 71556062.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21659716 + 4405801 = 4654^2 + 2099^2 .

It is a cyclic number.

It is not a de Polignac number, because 26065517 - 2⁸ = 26065261 is a prime.

It is a super-2 number, since 2×26065517² = 1358822352954578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26365517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13032758 + 13032759.

It is an arithmetic number, because the mean of its divisors is an integer number (13032759).

Almost surely, 2^26065517 is an apocalyptic number.

It is an amenable number.

26065517 is a deficient number, since it is larger than the sum of its proper divisors (1).

26065517 is an equidigital number, since it uses as much as digits as its factorization.

26065517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 26065517 is about 5105.4399418659. The cubic root of 26065517 is about 296.4982363938.

The spelling of 26065517 in words is "twenty-six million, sixty-five thousand, five hundred seventeen".