135593561 has 2 divisors, whose sum is σ = 135593562. Its totient is φ = 135593560.

The previous prime is 135593539. The next prime is 135593573. The reversal of 135593561 is 165395531.

135593561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109327936 + 26265625 = 10456^2 + 5125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135593561 is a prime.

It is a super-2 number, since 2×135593561² = 36771227569321442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135596561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67796780 + 67796781.

It is an arithmetic number, because the mean of its divisors is an integer number (67796781).

Almost surely, 2^135593561 is an apocalyptic number.

It is an amenable number.

135593561 is a deficient number, since it is larger than the sum of its proper divisors (1).

135593561 is an equidigital number, since it uses as much as digits as its factorization.

135593561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60750, while the sum is 38.

The square root of 135593561 is about 11644.4648223952. The cubic root of 135593561 is about 513.7435181703.

The spelling of 135593561 in words is "one hundred thirty-five million, five hundred ninety-three thousand, five hundred sixty-one".