136072549 has 2 divisors, whose sum is σ = 136072550. Its totient is φ = 136072548.

The previous prime is 136072543. The next prime is 136072583. The reversal of 136072549 is 945270631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136072225 + 324 = 11665^2 + 18^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136072549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136072543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68036274 + 68036275.

It is an arithmetic number, because the mean of its divisors is an integer number (68036275).

Almost surely, 2^136072549 is an apocalyptic number.

It is an amenable number.

136072549 is a deficient number, since it is larger than the sum of its proper divisors (1).

136072549 is an equidigital number, since it uses as much as digits as its factorization.

136072549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 136072549 is about 11665.0138876900. The cubic root of 136072549 is about 514.3477449686.

The spelling of 136072549 in words is "one hundred thirty-six million, seventy-two thousand, five hundred forty-nine".