11111249 has 4 divisors (see below), whose sum is σ = 11118900. Its totient is φ = 11103600.

The previous prime is 11111209. The next prime is 11111267. The reversal of 11111249 is 94211111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9193024 + 1918225 = 3032^2 + 1385^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111249 - 2²⁰ = 10062673 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11111249.

It is not an unprimeable number, because it can be changed into a prime (11111209) 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 in 3 ways as a sum of consecutive naturals, for example, 902 + ... + 4799.

It is an arithmetic number, because the mean of its divisors is an integer number (2779725).

Almost surely, 2^11111249 is an apocalyptic number.

It is an amenable number.

11111249 is a deficient number, since it is larger than the sum of its proper divisors (7651).

11111249 is an equidigital number, since it uses as much as digits as its factorization.

11111249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650.

The product of its digits is 72, while the sum is 20.

The square root of 11111249 is about 3333.3540166025. The cubic root of 11111249 is about 223.1452397639.

The spelling of 11111249 in words is "eleven million, one hundred eleven thousand, two hundred forty-nine".