11173 has 2 divisors, whose sum is σ = 11174.
Its totient is φ = 11172.
The previous prime is 11171. The next prime is 11177. The reversal of 11173 is 37111.
Adding to 11173 its reverse (37111), we get a palindrome (48284).
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 9409 + 1764 = 97^2 + 42^2
It is a cyclic number.
It is not a de Polignac number, because 11173 - 21 = 11171 is a prime.
Together with 11171, it forms a pair of twin primes.
11173 is a lucky number.
It is equal to p1354 and since 11173 and 1354 have the same sum of digits, it is a Honaker prime.
It is a plaindrome in base 15.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (11171) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5586 + 5587.
It is an arithmetic number, because the mean of its divisors is an integer number (5587).
211173 is an apocalyptic number.
11173 is the 57-th centered heptagonal number.
It is an amenable number.
11173 is a deficient number, since it is larger than the sum of its proper divisors (1).
11173 is an equidigital number, since it uses as much as digits as its factorization.
11173 is an evil number, because the sum of its binary digits is even.
The product of its digits is 21, while the sum is 13.
The square root of 11173 is about 105.7024124606.
The cubic root of 11173 is about 22.3557854455.
The spelling of 11173 in words is "eleven thousand, one hundred seventy-three", and thus it is an iban number.