136757249 has 4 divisors (see below), whose sum is σ = 136780800. Its totient is φ = 136733700.

The previous prime is 136757237. The next prime is 136757267. The reversal of 136757249 is 942757631.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 136757249 - 2¹² = 136753153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136757209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3824 + ... + 16974.

It is an arithmetic number, because the mean of its divisors is an integer number (34195200).

It is a Proth number, since it is equal to 8347 ⋅ 2¹⁴ + 1 and 8347 < 2¹⁴.

Almost surely, 2^136757249 is an apocalyptic number.

It is an amenable number.

136757249 is a deficient number, since it is larger than the sum of its proper divisors (23551).

136757249 is a wasteful number, since it uses less digits than its factorization.

136757249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23550.

The product of its digits is 317520, while the sum is 44.

The square root of 136757249 is about 11694.3255042777. The cubic root of 136757249 is about 515.2090130961.

The spelling of 136757249 in words is "one hundred thirty-six million, seven hundred fifty-seven thousand, two hundred forty-nine".