16516505 has 16 divisors (see below), whose sum is σ = 20563200. Its totient is φ = 12726912.

The previous prime is 16516471. The next prime is 16516579. The reversal of 16516505 is 50561561.

16516505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16516505 - 2⁸ = 16516249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15221 + ... + 16269.

It is an arithmetic number, because the mean of its divisors is an integer number (1285200).

Almost surely, 2^16516505 is an apocalyptic number.

It is an amenable number.

16516505 is a deficient number, since it is larger than the sum of its proper divisors (4046695).

16516505 is a wasteful number, since it uses less digits than its factorization.

16516505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 16516505 is about 4064.0503195704. The cubic root of 16516505 is about 254.6670266328.

The spelling of 16516505 in words is "sixteen million, five hundred sixteen thousand, five hundred five".