165

This number is a composite.

165 is a multiple of (16 - 5), which is its largest prime factor. [Trotter]

165 is the mean of the nth larger prime and nth smaller prime, for n = 1, 2, 3, 4, 5, 6. [Post]

The smallest sphenic number whose the reversal is a different sphenic number. Shall we call this a cinehps number? [Loungrides]

The smallest number such that the sum of cubes of its distinct prime factors is a prime. [Gudipati]