To extend Oz's point, with that many limpers, if you call 5BB, this will trigger a call-fest since every consecutive player gets better and better odds
. On the flop you will face a huge pot, likely one or more overcards and almost certainly someone will have paired with the overcard.
The only justification to call is to see whether you can hit a set. You have the odds to call for set value, but must release your hand if you don't hit it.
And definitely not worth it to push that early.