47165 has 4 divisors (see below), whose sum is σ = 56604.
Its totient is φ = 37728.
The previous prime is 47161. The next prime is 47189. The reversal of 47165 is 56174.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56174 = 2 ⋅28087.
It can be written as a sum of positive squares in 2 ways, for example, as 24964 + 22201 = 158^2 + 149^2
It is a cyclic number.
It is not a de Polignac number, because 47165 - 22 = 47161 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 47165.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (47161) 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, 4712 + ... + 4721.
It is an arithmetic number, because the mean of its divisors is an integer number (14151).
247165 is an apocalyptic number.
It is an amenable number.
47165 is a deficient number, since it is larger than the sum of its proper divisors (9439).
47165 is an equidigital number, since it uses as much as digits as its factorization.
47165 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9438.
The product of its digits is 840, while the sum is 23.
The square root of 47165 is about 217.1750446069.
The cubic root of 47165 is about 36.1304424218.
Subtracting 47165 from its reverse (56174), we obtain a palindrome (9009).
It can be divided in two parts, 47 and 165, that added together give a palindrome (212).
The spelling of 47165 in words is "forty-seven thousand, one hundred sixty-five".