11249281 has 2 divisors, whose sum is σ = 11249282. Its totient is φ = 11249280.

The previous prime is 11249269. The next prime is 11249297. The reversal of 11249281 is 18294211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7789681 + 3459600 = 2791^2 + 1860^2 .

It is a cyclic number.

It is not a de Polignac number, because 11249281 - 2¹¹ = 11247233 is a prime.

It is a super-2 number, since 2×11249281² = 253092646033922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11249201) 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, 5624640 + 5624641.

It is an arithmetic number, because the mean of its divisors is an integer number (5624641).

Almost surely, 2^11249281 is an apocalyptic number.

It is an amenable number.

11249281 is a deficient number, since it is larger than the sum of its proper divisors (1).

11249281 is an equidigital number, since it uses as much as digits as its factorization.

11249281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 28.

The square root of 11249281 is about 3353.9947823454. The cubic root of 11249281 is about 224.0654637002.

The spelling of 11249281 in words is "eleven million, two hundred forty-nine thousand, two hundred eighty-one".