16115 has 8 divisors (see below), whose sum is σ = 21168. Its totient is φ = 11680.

The previous prime is 16111. The next prime is 16127. The reversal of 16115 is 51161.

16115 = 7² + 8² + ... + 36².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16115 - 2² = 16111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16115.

It is not an unprimeable number, because it can be changed into a prime (16111) 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 7 ways as a sum of consecutive naturals, for example, 92 + ... + 201.

It is an arithmetic number, because the mean of its divisors is an integer number (2646).

2¹⁶¹¹⁵ is an apocalyptic number.

16115 is a deficient number, since it is larger than the sum of its proper divisors (5053).

16115 is a wasteful number, since it uses less digits than its factorization.

16115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309.

The product of its digits is 30, while the sum is 14.

The square root of 16115 is about 126.9448699239. The cubic root of 16115 is about 25.2586481503.

Adding to 16115 its sum of digits (14), we get a square (16129 = 127²).

Adding to 16115 its reverse (51161), we get a palindrome (67276).

It can be divided in two parts, 161 and 15, that multiplied together give a triangular number (2415 = T₆₉).

The spelling of 16115 in words is "sixteen thousand, one hundred fifteen".