136514561 has 2 divisors, whose sum is σ = 136514562. Its totient is φ = 136514560.

The previous prime is 136514549. The next prime is 136514569. The reversal of 136514561 is 165415631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92544400 + 43970161 = 9620^2 + 6631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136514561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136514569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68257280 + 68257281.

It is an arithmetic number, because the mean of its divisors is an integer number (68257281).

Almost surely, 2^136514561 is an apocalyptic number.

It is an amenable number.

136514561 is a deficient number, since it is larger than the sum of its proper divisors (1).

136514561 is an equidigital number, since it uses as much as digits as its factorization.

136514561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 136514561 is about 11683.9445822034. The cubic root of 136514561 is about 514.9040711135.

The spelling of 136514561 in words is "one hundred thirty-six million, five hundred fourteen thousand, five hundred sixty-one".