11453681 has 2 divisors, whose sum is σ = 11453682. Its totient is φ = 11453680.

The previous prime is 11453669. The next prime is 11453693. The reversal of 11453681 is 18635411.

It is a balanced prime because it is at equal distance from previous prime (11453669) and next prime (11453693).

It can be written as a sum of positive squares in only one way, i.e., 7612081 + 3841600 = 2759^2 + 1960^2 .

It is an emirp because it is prime and its reverse (18635411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11453681 is a prime.

It is a super-2 number, since 2×11453681² = 262373616899522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11452681) 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, 5726840 + 5726841.

It is an arithmetic number, because the mean of its divisors is an integer number (5726841).

Almost surely, 2^11453681 is an apocalyptic number.

It is an amenable number.

11453681 is a deficient number, since it is larger than the sum of its proper divisors (1).

11453681 is an equidigital number, since it uses as much as digits as its factorization.

11453681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 29.

The square root of 11453681 is about 3384.3287369876. The cubic root of 11453681 is about 225.4144197649.

The spelling of 11453681 in words is "eleven million, four hundred fifty-three thousand, six hundred eighty-one".