136449557 has 2 divisors, whose sum is σ = 136449558. Its totient is φ = 136449556.

The previous prime is 136449529. The next prime is 136449589. The reversal of 136449557 is 755944631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136282276 + 167281 = 11674^2 + 409^2 .

It is a cyclic number.

It is not a de Polignac number, because 136449557 - 2⁸ = 136449301 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 (136449857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68224778 + 68224779.

It is an arithmetic number, because the mean of its divisors is an integer number (68224779).

Almost surely, 2^136449557 is an apocalyptic number.

It is an amenable number.

136449557 is a deficient number, since it is larger than the sum of its proper divisors (1).

136449557 is an equidigital number, since it uses as much as digits as its factorization.

136449557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 44.

The square root of 136449557 is about 11681.1624849584. The cubic root of 136449557 is about 514.8223310217.

The spelling of 136449557 in words is "one hundred thirty-six million, four hundred forty-nine thousand, five hundred fifty-seven".