11581249 has 2 divisors, whose sum is σ = 11581250. Its totient is φ = 11581248.

The previous prime is 11581177. The next prime is 11581253. The reversal of 11581249 is 94218511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8809024 + 2772225 = 2968^2 + 1665^2 .

It is a cyclic number.

It is not a de Polignac number, because 11581249 - 2¹⁹ = 11056961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11581249.

It is not a weakly prime, because it can be changed into another prime (11581049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5790624 + 5790625.

It is an arithmetic number, because the mean of its divisors is an integer number (5790625).

Almost surely, 2^11581249 is an apocalyptic number.

It is an amenable number.

11581249 is a deficient number, since it is larger than the sum of its proper divisors (1).

11581249 is an equidigital number, since it uses as much as digits as its factorization.

11581249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 31.

The square root of 11581249 is about 3403.1234182733. The cubic root of 11581249 is about 226.2482001831.

The spelling of 11581249 in words is "eleven million, five hundred eighty-one thousand, two hundred forty-nine".