11643171 has 4 divisors (see below), whose sum is σ = 15524232. Its totient is φ = 7762112.

The previous prime is 11643161. The next prime is 11643209. The reversal of 11643171 is 17134611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11643171 - 2²² = 7448867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11643161) 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 in 3 ways as a sum of consecutive naturals, for example, 1940526 + ... + 1940531.

It is an arithmetic number, because the mean of its divisors is an integer number (3881058).

Almost surely, 2^11643171 is an apocalyptic number.

11643171 is a deficient number, since it is larger than the sum of its proper divisors (3881061).

11643171 is an equidigital number, since it uses as much as digits as its factorization.

11643171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881060.

The product of its digits is 504, while the sum is 24.

The square root of 11643171 is about 3412.2091084809. The cubic root of 11643171 is about 226.6507142272.

Adding to 11643171 its reverse (17134611), we get a palindrome (28777782).

The spelling of 11643171 in words is "eleven million, six hundred forty-three thousand, one hundred seventy-one".