16105 has 4 divisors (see below), whose sum is σ = 19332. Its totient is φ = 12880.

The previous prime is 16103. The next prime is 16111. The reversal of 16105 is 50161.

16105 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50161 = 103 ⋅487.

It can be written as a sum of positive squares in 2 ways, for example, as 9216 + 6889 = 96^2 + 83^2 .

It is not a de Polignac number, because 16105 - 2¹ = 16103 is a prime.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

16105 is a nontrivial repdigit in base 11.

It is a plaindrome in base 11.

It is a nialpdrome in base 11.

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (16103) by changing a digit.

It is a nontrivial repunit in base 11.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1606 + ... + 1615.

It is an arithmetic number, because the mean of its divisors is an integer number (4833).

2¹⁶¹⁰⁵ is an apocalyptic number.

It is an amenable number.

16105 is a deficient number, since it is larger than the sum of its proper divisors (3227).

16105 is an equidigital number, since it uses as much as digits as its factorization.

16105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 16105 is about 126.9054766352. The cubic root of 16105 is about 25.2534224031.

Adding to 16105 its reverse (50161), we get a palindrome (66266).

It can be divided in two parts, 16 and 105, that added together give a palindrome (121).

The spelling of 16105 in words is "sixteen thousand, one hundred five".