11188897 has 2 divisors, whose sum is σ = 11188898. Its totient is φ = 11188896.

The previous prime is 11188889. The next prime is 11188913. The reversal of 11188897 is 79888111.

11188897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11182336 + 6561 = 3344^2 + 81^2 .

It is an emirp because it is prime and its reverse (79888111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11188897 - 2³ = 11188889 is a prime.

It is not a weakly prime, because it can be changed into another prime (11188997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5594448 + 5594449.

It is an arithmetic number, because the mean of its divisors is an integer number (5594449).

Almost surely, 2^11188897 is an apocalyptic number.

It is an amenable number.

11188897 is a deficient number, since it is larger than the sum of its proper divisors (1).

11188897 is an equidigital number, since it uses as much as digits as its factorization.

11188897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 43.

The square root of 11188897 is about 3344.9808669109. The cubic root of 11188897 is about 223.6638306187.

The spelling of 11188897 in words is "eleven million, one hundred eighty-eight thousand, eight hundred ninety-seven".