11571167 has 4 divisors (see below), whose sum is σ = 11578320. Its totient is φ = 11564016.

The previous prime is 11571163. The next prime is 11571173. The reversal of 11571167 is 76117511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11571167 - 2² = 11571163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11571163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134 + ... + 4812.

It is an arithmetic number, because the mean of its divisors is an integer number (2894580).

Almost surely, 2^11571167 is an apocalyptic number.

11571167 is a deficient number, since it is larger than the sum of its proper divisors (7153).

11571167 is an equidigital number, since it uses as much as digits as its factorization.

11571167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152.

The product of its digits is 1470, while the sum is 29.

The square root of 11571167 is about 3401.6418094797. The cubic root of 11571167 is about 226.1825280324.

Adding to 11571167 its reverse (76117511), we get a palindrome (87688678).

The spelling of 11571167 in words is "eleven million, five hundred seventy-one thousand, one hundred sixty-seven".