135599593 has 2 divisors, whose sum is σ = 135599594. Its totient is φ = 135599592.

The previous prime is 135599591. The next prime is 135599609. The reversal of 135599593 is 395995531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119180889 + 16418704 = 10917^2 + 4052^2 .

It is a cyclic number.

It is not a de Polignac number, because 135599593 - 2¹ = 135599591 is a prime.

Together with 135599591, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (135599591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67799796 + 67799797.

It is an arithmetic number, because the mean of its divisors is an integer number (67799797).

Almost surely, 2^135599593 is an apocalyptic number.

It is an amenable number.

135599593 is a deficient number, since it is larger than the sum of its proper divisors (1).

135599593 is an equidigital number, since it uses as much as digits as its factorization.

135599593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 820125, while the sum is 49.

The square root of 135599593 is about 11644.7238266951. The cubic root of 135599593 is about 513.7511361696.

The spelling of 135599593 in words is "one hundred thirty-five million, five hundred ninety-nine thousand, five hundred ninety-three".