16516 has 6 divisors (see below), whose sum is σ = 28910. Its totient is φ = 8256.

The previous prime is 16493. The next prime is 16519. The reversal of 16516 is 61561.

16516 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in only one way, i.e., 14400 + 2116 = 120^2 + 46^2 .

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 16493 and 16502.

It is not an unprimeable number, because it can be changed into a prime (16519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2061 + ... + 2068.

2¹⁶⁵¹⁶ is an apocalyptic number.

It is an amenable number.

16516 is a deficient number, since it is larger than the sum of its proper divisors (12394).

16516 is a wasteful number, since it uses less digits than its factorization.

16516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133 (or 4131 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 16516 is about 128.5145906113. The cubic root of 16516 is about 25.4664431085.

It can be divided in two parts, 165 and 16, that added together give a palindrome (181).

The spelling of 16516 in words is "sixteen thousand, five hundred sixteen".