11551249 has 2 divisors, whose sum is σ = 11551250. Its totient is φ = 11551248.

The previous prime is 11551247. The next prime is 11551261. The reversal of 11551249 is 94215511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8661249 + 2890000 = 2943^2 + 1700^2 .

It is a cyclic number.

It is not a de Polignac number, because 11551249 - 2¹ = 11551247 is a prime.

Together with 11551247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11551247) 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 as a sum of consecutive naturals, namely, 5775624 + 5775625.

It is an arithmetic number, because the mean of its divisors is an integer number (5775625).

Almost surely, 2^11551249 is an apocalyptic number.

It is an amenable number.

11551249 is a deficient number, since it is larger than the sum of its proper divisors (1).

11551249 is an equidigital number, since it uses as much as digits as its factorization.

11551249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 28.

The square root of 11551249 is about 3398.7128445928. The cubic root of 11551249 is about 226.0526739154.

Subtracting from 11551249 its sum of digits (28), we obtain a triangular number (11551221 = T₄₈₀₆).

The spelling of 11551249 in words is "eleven million, five hundred fifty-one thousand, two hundred forty-nine".