11188481 has 2 divisors, whose sum is σ = 11188482. Its totient is φ = 11188480.

The previous prime is 11188453. The next prime is 11188487. The reversal of 11188481 is 18488111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 1050625 = 3184^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 11188481 - 2²² = 6994177 is a prime.

It is a super-2 number, since 2×11188481² = 250364214174722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11188487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5594240 + 5594241.

It is an arithmetic number, because the mean of its divisors is an integer number (5594241).

Almost surely, 2^11188481 is an apocalyptic number.

It is an amenable number.

11188481 is a deficient number, since it is larger than the sum of its proper divisors (1).

11188481 is an equidigital number, since it uses as much as digits as its factorization.

11188481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2048, while the sum is 32.

The square root of 11188481 is about 3344.9186836155. The cubic root of 11188481 is about 223.6610586652.

The spelling of 11188481 in words is "eleven million, one hundred eighty-eight thousand, four hundred eighty-one".