Magnus Chase and the sword of summer by Rick Riordan is a book about the norse gods such as Tyr, Loki, Odin, Thor and in my opinion a very amusing take on the norse gods and their offspring. Magnus is a sixteen year old homeless boy threw into a situation way beyond his understanding and skill set. 
 Magnus is quite like Percy so I see where the comparison begins but I don't think its the same book merely with a different set of gods. Magnus while having the same sense of humour is different to Percy. I found the humour in the book amusing but I know others may not like it since different people enjoy different jokes. 
 The way the norse gods are portrayed is different. Thor for example is still the brash foolhardy god we know but hes obsessed with TV and portrayed in less of a majestic way than you may expect. Loki's children are included which I found cool since I wasn't sure whether they would be in. 
 I will say that you don't need to read his other series to understand the book and jokes, theres a few inside jokes but its not a major theme. Annabeth has a cameo as Magnus cousin but even then you don't need to know or understand her story with the greek gods since she is in no way a major character.