11247881 has 2 divisors, whose sum is σ = 11247882. Its totient is φ = 11247880.

The previous prime is 11247877. The next prime is 11247917. The reversal of 11247881 is 18874211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8357881 + 2890000 = 2891^2 + 1700^2 .

It is an emirp because it is prime and its reverse (18874211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11247881 - 2² = 11247877 is a prime.

It is a super-2 number, since 2×11247881² = 253029653980322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11247871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5623940 + 5623941.

It is an arithmetic number, because the mean of its divisors is an integer number (5623941).

Almost surely, 2^11247881 is an apocalyptic number.

It is an amenable number.

11247881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11247881 is an equidigital number, since it uses as much as digits as its factorization.

11247881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3584, while the sum is 32.

The square root of 11247881 is about 3353.7860695041. The cubic root of 11247881 is about 224.0561681531.

The spelling of 11247881 in words is "eleven million, two hundred forty-seven thousand, eight hundred eighty-one".