136555449 has 4 divisors (see below), whose sum is σ = 182073936. Its totient is φ = 91036964.

The previous prime is 136555421. The next prime is 136555453. The reversal of 136555449 is 944555631.

136555449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 944555631 = 3 ⋅314851877.

It is a cyclic number.

It is not a de Polignac number, because 136555449 - 2⁵ = 136555417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136555449.

It is not an unprimeable number, because it can be changed into a prime (136555409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22759239 + ... + 22759244.

It is an arithmetic number, because the mean of its divisors is an integer number (45518484).

Almost surely, 2^136555449 is an apocalyptic number.

It is an amenable number.

136555449 is a deficient number, since it is larger than the sum of its proper divisors (45518487).

136555449 is an equidigital number, since it uses as much as digits as its factorization.

136555449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45518486.

The product of its digits is 324000, while the sum is 42.

The square root of 136555449 is about 11685.6942027421. The cubic root of 136555449 is about 514.9554729467.

The spelling of 136555449 in words is "one hundred thirty-six million, five hundred fifty-five thousand, four hundred forty-nine".