16522009 has 8 divisors (see below), whose sum is σ = 18939200. Its totient is φ = 14119056.

The previous prime is 16522007. The next prime is 16522013. The reversal of 16522009 is 90022561.

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

It is not a de Polignac number, because 16522009 - 2¹ = 16522007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16522003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939 + ... + 5824.

It is an arithmetic number, because the mean of its divisors is an integer number (2367400).

Almost surely, 2^16522009 is an apocalyptic number.

It is an amenable number.

16522009 is a deficient number, since it is larger than the sum of its proper divisors (2417191).

16522009 is an equidigital number, since it uses as much as digits as its factorization.

16522009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7119.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 16522009 is about 4064.7274201353. The cubic root of 16522009 is about 254.6953121094.

The spelling of 16522009 in words is "sixteen million, five hundred twenty-two thousand, nine".