16545 has 8 divisors (see below), whose sum is σ = 26496. Its totient is φ = 8816.

The previous prime is 16529. The next prime is 16547. The reversal of 16545 is 54561.

It is a happy number.

16545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 16545 - 2⁴ = 16529 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537 + ... + 566.

It is an arithmetic number, because the mean of its divisors is an integer number (3312).

2¹⁶⁵⁴⁵ is an apocalyptic number.

16545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16545 is a deficient number, since it is larger than the sum of its proper divisors (9951).

16545 is a wasteful number, since it uses less digits than its factorization.

16545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111.

The product of its digits is 600, while the sum is 21.

The square root of 16545 is about 128.6273687829. The cubic root of 16545 is about 25.4813396738.

It can be divided in two parts, 165 and 45, that added together give a triangular number (210 = T₂₀).

The spelling of 16545 in words is "sixteen thousand, five hundred forty-five".