136236253 has 2 divisors, whose sum is σ = 136236254. Its totient is φ = 136236252.

The previous prime is 136236223. The next prime is 136236271. The reversal of 136236253 is 352632631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128187684 + 8048569 = 11322^2 + 2837^2 .

It is a cyclic number.

It is not a de Polignac number, because 136236253 - 2⁹ = 136235741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136236203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68118126 + 68118127.

It is an arithmetic number, because the mean of its divisors is an integer number (68118127).

Almost surely, 2^136236253 is an apocalyptic number.

It is an amenable number.

136236253 is a deficient number, since it is larger than the sum of its proper divisors (1).

136236253 is an equidigital number, since it uses as much as digits as its factorization.

136236253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 31.

The square root of 136236253 is about 11672.0286582924. The cubic root of 136236253 is about 514.5539267447.

Adding to 136236253 its reverse (352632631), we get a palindrome (488868884).

The spelling of 136236253 in words is "one hundred thirty-six million, two hundred thirty-six thousand, two hundred fifty-three".