136553749 has 2 divisors, whose sum is σ = 136553750. Its totient is φ = 136553748.

The previous prime is 136553713. The next prime is 136553759. The reversal of 136553749 is 947355631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70862724 + 65691025 = 8418^2 + 8105^2 .

It is a cyclic number.

It is not a de Polignac number, because 136553749 - 2⁹ = 136553237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136553759) 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, 68276874 + 68276875.

It is an arithmetic number, because the mean of its divisors is an integer number (68276875).

Almost surely, 2^136553749 is an apocalyptic number.

It is an amenable number.

136553749 is a deficient number, since it is larger than the sum of its proper divisors (1).

136553749 is an equidigital number, since it uses as much as digits as its factorization.

136553749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 43.

The square root of 136553749 is about 11685.6214640044. The cubic root of 136553749 is about 514.9533360176.

The spelling of 136553749 in words is "one hundred thirty-six million, five hundred fifty-three thousand, seven hundred forty-nine".