16545081 has 16 divisors (see below), whose sum is σ = 25749504. Its totient is φ = 9252624.

The previous prime is 16545071. The next prime is 16545083. The reversal of 16545081 is 18054561.

It is not a de Polignac number, because 16545081 - 2⁹ = 16544569 is a prime.

It is a super-2 number, since 2×16545081² = 547479410593122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16545083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7395 + ... + 9368.

It is an arithmetic number, because the mean of its divisors is an integer number (1609344).

Almost surely, 2^16545081 is an apocalyptic number.

It is an amenable number.

16545081 is a deficient number, since it is larger than the sum of its proper divisors (9204423).

16545081 is a wasteful number, since it uses less digits than its factorization.

16545081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16820.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 16545081 is about 4067.5645047129. The cubic root of 16545081 is about 254.8138125703.

The spelling of 16545081 in words is "sixteen million, five hundred forty-five thousand, eighty-one".