136448561 has 2 divisors, whose sum is σ = 136448562. Its totient is φ = 136448560.

The previous prime is 136448531. The next prime is 136448569. The reversal of 136448561 is 165844631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123632161 + 12816400 = 11119^2 + 3580^2 .

It is a cyclic number.

It is not a de Polignac number, because 136448561 - 2¹⁰ = 136447537 is a prime.

It is not a weakly prime, because it can be changed into another prime (136448569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68224280 + 68224281.

It is an arithmetic number, because the mean of its divisors is an integer number (68224281).

Almost surely, 2^136448561 is an apocalyptic number.

It is an amenable number.

136448561 is a deficient number, since it is larger than the sum of its proper divisors (1).

136448561 is an equidigital number, since it uses as much as digits as its factorization.

136448561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 136448561 is about 11681.1198521375. The cubic root of 136448561 is about 514.8210783872.

The spelling of 136448561 in words is "one hundred thirty-six million, four hundred forty-eight thousand, five hundred sixty-one".