136548249 has 4 divisors (see below), whose sum is σ = 182064336. Its totient is φ = 91032164.

The previous prime is 136548239. The next prime is 136548253. The reversal of 136548249 is 942845631.

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.

It is a cyclic number.

It is not a de Polignac number, because 136548249 - 2⁷ = 136548121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136548249.

It is not an unprimeable number, because it can be changed into a prime (136548229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22758039 + ... + 22758044.

It is an arithmetic number, because the mean of its divisors is an integer number (45516084).

Almost surely, 2^136548249 is an apocalyptic number.

It is an amenable number.

136548249 is a deficient number, since it is larger than the sum of its proper divisors (45516087).

136548249 is an equidigital number, since it uses as much as digits as its factorization.

136548249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45516086.

The product of its digits is 207360, while the sum is 42.

The square root of 136548249 is about 11685.3861296921. The cubic root of 136548249 is about 514.9464223020.

The spelling of 136548249 in words is "one hundred thirty-six million, five hundred forty-eight thousand, two hundred forty-nine".