11248981 has 2 divisors, whose sum is σ = 11248982. Its totient is φ = 11248980.

The previous prime is 11248973. The next prime is 11248987. The reversal of 11248981 is 18984211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8608356 + 2640625 = 2934^2 + 1625^2 .

It is a cyclic number.

It is not a de Polignac number, because 11248981 - 2³ = 11248973 is a prime.

It is a super-2 number, since 2×11248981² = 253079147076722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11248987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5624490 + 5624491.

It is an arithmetic number, because the mean of its divisors is an integer number (5624491).

Almost surely, 2^11248981 is an apocalyptic number.

It is an amenable number.

11248981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11248981 is an equidigital number, since it uses as much as digits as its factorization.

11248981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 34.

The square root of 11248981 is about 3353.9500592585. The cubic root of 11248981 is about 224.0634718622.

The spelling of 11248981 in words is "eleven million, two hundred forty-eight thousand, nine hundred eighty-one".