135613249 has 2 divisors, whose sum is σ = 135613250. Its totient is φ = 135613248.

The previous prime is 135613243. The next prime is 135613253. The reversal of 135613249 is 942316531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133633600 + 1979649 = 11560^2 + 1407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135613249 is a prime.

It is not a weakly prime, because it can be changed into another prime (135613243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67806624 + 67806625.

It is an arithmetic number, because the mean of its divisors is an integer number (67806625).

Almost surely, 2^135613249 is an apocalyptic number.

It is an amenable number.

135613249 is a deficient number, since it is larger than the sum of its proper divisors (1).

135613249 is an equidigital number, since it uses as much as digits as its factorization.

135613249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 135613249 is about 11645.3101719104. The cubic root of 135613249 is about 513.7683819195.

The spelling of 135613249 in words is "one hundred thirty-five million, six hundred thirteen thousand, two hundred forty-nine".