50Mbps support how many devices

Hello 

I am living in Royal Oak , Calgary  I am currently using other provider which they offered me 600Mbps but tell you the truth the internet sucks and always buffer  

Problem is Telus doesnt have more than 50Mbps connection for my address. and Currently I am having 5 Ipads + 5 iphones + 1 iptv  

I was wandering if 50 is enough for the devices I have or not 

Thanks