135217597 has 2 divisors, whose sum is σ = 135217598. Its totient is φ = 135217596.

The previous prime is 135217571. The next prime is 135217603. The reversal of 135217597 is 795712531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84437721 + 50779876 = 9189^2 + 7126^2 .

It is a cyclic number.

It is not a de Polignac number, because 135217597 - 2¹⁹ = 134693309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135257597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67608798 + 67608799.

It is an arithmetic number, because the mean of its divisors is an integer number (67608799).

Almost surely, 2^135217597 is an apocalyptic number.

It is an amenable number.

135217597 is a deficient number, since it is larger than the sum of its proper divisors (1).

135217597 is an equidigital number, since it uses as much as digits as its factorization.

135217597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 66150, while the sum is 40.

The square root of 135217597 is about 11628.3101523824. The cubic root of 135217597 is about 513.2682550415.

The spelling of 135217597 in words is "one hundred thirty-five million, two hundred seventeen thousand, five hundred ninety-seven".