IPhone 5 has 5.90 GB of other memory on it?

I've tried wiping my phone and restoring from backup but this other memory keeps on coming back. Don't know how to get rid of it

You can't get rid of it. The "other" is apps such as contacts, messaging, clock, calculator, ect

The other is updates

The other is Game Center Friends, Updates.

Data from, such as in app downloads. By which I mean videos and music that you can only access from the app.