16545165 has 128 divisors (see below), whose sum is σ = 37158912. Its totient is φ = 6082560.

The previous prime is 16545107. The next prime is 16545173. The reversal of 16545165 is 56154561.

It is not a de Polignac number, because 16545165 - 2⁹ = 16544653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 533700 + ... + 533730.

It is an arithmetic number, because the mean of its divisors is an integer number (290304).

Almost surely, 2^16545165 is an apocalyptic number.

16545165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16545165 is an abundant number, since it is smaller than the sum of its proper divisors (20613747).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16545165 is a wasteful number, since it uses less digits than its factorization.

16545165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99.

The product of its digits is 18000, while the sum is 33.

The square root of 16545165 is about 4067.5748302889. The cubic root of 16545165 is about 254.8142438027.

The spelling of 16545165 in words is "sixteen million, five hundred forty-five thousand, one hundred sixty-five".