136532251 has 2 divisors, whose sum is σ = 136532252. Its totient is φ = 136532250.

The previous prime is 136532191. The next prime is 136532269. The reversal of 136532251 is 152235631.

It is a strong prime.

It is an emirp because it is prime and its reverse (152235631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136532251 - 2¹⁵ = 136499483 is a prime.

It is not a weakly prime, because it can be changed into another prime (136532351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68266125 + 68266126.

It is an arithmetic number, because the mean of its divisors is an integer number (68266126).

Almost surely, 2^136532251 is an apocalyptic number.

136532251 is a deficient number, since it is larger than the sum of its proper divisors (1).

136532251 is an equidigital number, since it uses as much as digits as its factorization.

136532251 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 136532251 is about 11684.7015794157. The cubic root of 136532251 is about 514.9263111333.

Adding to 136532251 its reverse (152235631), we get a palindrome (288767882).

The spelling of 136532251 in words is "one hundred thirty-six million, five hundred thirty-two thousand, two hundred fifty-one".