What is the most appropriate center for 27 142 145 146 154 162 /12592106/70400e23? utm_source=registration

27 142 145 146 154 162    

27 is definitely an outlier.  You could temporarily drop it and focus on
{142 145 146 154 162}.  The median of this 5-numeral set is 146; it'd be a good "center."  So would the mean  (142 +145 +146 +154 +162) /5.  No one value shows up more than once, so forget about "mode."