The Number 165: Properties and MeaningsPrime Factors of 165=3x5x11.
165 is an 18-gonal Number.
165 is a 56-gonal Number.
165 is a Tetrahedral Number.
The Chemical Element Holmium has one Stable Isotope. It has 165 neutrons.
The Year 165 ADIn the year 165 AD the philosopher Justin of Nablus was executed in Rome as a Christian.