The Number 591: Properties and MeaningsPrime Factors of 591=3x197.
591 is a 41-gonal Number.
591 is a 198-gonal Number.
The Year 591 ADIn the year 591 AD Cadwallon, king of Gwynedd was born.
In the year 591 AD Jnanagupta translated the Vimalakirti Sutra into Chinese.
In the year 591 AD Agilulf married Theodelinda and is made king of the Lombards.
In the year 591 AD the first city wall of Hangzhou was constructed.