136569253 has 2 divisors, whose sum is σ = 136569254. Its totient is φ = 136569252.

The previous prime is 136569241. The next prime is 136569269. The reversal of 136569253 is 352965631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136002244 + 567009 = 11662^2 + 753^2 .

It is an emirp because it is prime and its reverse (352965631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136569253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136569233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68284626 + 68284627.

It is an arithmetic number, because the mean of its divisors is an integer number (68284627).

Almost surely, 2^136569253 is an apocalyptic number.

It is an amenable number.

136569253 is a deficient number, since it is larger than the sum of its proper divisors (1).

136569253 is an equidigital number, since it uses as much as digits as its factorization.

136569253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 40.

The square root of 136569253 is about 11686.2848245283. The cubic root of 136569253 is about 514.9728241543.

The spelling of 136569253 in words is "one hundred thirty-six million, five hundred sixty-nine thousand, two hundred fifty-three".