135291617 has 2 divisors, whose sum is σ = 135291618. Its totient is φ = 135291616.

The previous prime is 135291587. The next prime is 135291643. The reversal of 135291617 is 716192531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118897216 + 16394401 = 10904^2 + 4049^2 .

It is a cyclic number.

It is not a de Polignac number, because 135291617 - 2⁸ = 135291361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135291697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67645808 + 67645809.

It is an arithmetic number, because the mean of its divisors is an integer number (67645809).

Almost surely, 2^135291617 is an apocalyptic number.

It is an amenable number.

135291617 is a deficient number, since it is larger than the sum of its proper divisors (1).

135291617 is an equidigital number, since it uses as much as digits as its factorization.

135291617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 35.

The square root of 135291617 is about 11631.4924665754. The cubic root of 135291617 is about 513.3618946928.

The spelling of 135291617 in words is "one hundred thirty-five million, two hundred ninety-one thousand, six hundred seventeen".