136253251 has 2 divisors, whose sum is σ = 136253252. Its totient is φ = 136253250.

The previous prime is 136253239. The next prime is 136253267. The reversal of 136253251 is 152352631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136253251 - 2¹⁹ = 135728963 is a prime.

It is not a weakly prime, because it can be changed into another prime (136256251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68126625 + 68126626.

It is an arithmetic number, because the mean of its divisors is an integer number (68126626).

Almost surely, 2^136253251 is an apocalyptic number.

136253251 is a deficient number, since it is larger than the sum of its proper divisors (1).

136253251 is an equidigital number, since it uses as much as digits as its factorization.

136253251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 28.

The square root of 136253251 is about 11672.7567866379. The cubic root of 136253251 is about 514.5753259042.

The spelling of 136253251 in words is "one hundred thirty-six million, two hundred fifty-three thousand, two hundred fifty-one".