11564171 has 2 divisors, whose sum is σ = 11564172. Its totient is φ = 11564170.

The previous prime is 11564167. The next prime is 11564183. The reversal of 11564171 is 17146511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11564171 - 2² = 11564167 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11564171.

It is not a weakly prime, because it can be changed into another prime (11564191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5782085 + 5782086.

It is an arithmetic number, because the mean of its divisors is an integer number (5782086).

Almost surely, 2^11564171 is an apocalyptic number.

11564171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11564171 is an equidigital number, since it uses as much as digits as its factorization.

11564171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 26.

The square root of 11564171 is about 3400.6133270338. The cubic root of 11564171 is about 226.1369350518.

The spelling of 11564171 in words is "eleven million, five hundred sixty-four thousand, one hundred seventy-one".