folding AK as big stack preflop in bb?

[kuro]

6 handed blinds 100/200, stacks are aproximations from memory.

UTG 3500
MP 550
Co 1200
Button 1900
SB 1200
Hero 3600

Preflop: Hero is BB and dealt AKo, UTG limps 200,UTG+1 folds, MP pushes All-in for 550, Co folds, Button pushes all-in to 1900, Hero folds, big stack calls 1700.

I honestly don't think UTG is capable of folding preflop any hand that he would open limp with from utg. With that read is this a clear fold? Without that read is this a clear push?