That is actually with the caviat that the internal pressure help structurally a bit. But that is still plenty for a gentle rotation in otbit and 1 bar of pressure.
And if the plan is to do this; you want to prepare the rocket for this purpose anyway so nothing stops you from making a thicker wall and sacrificing payload capacity since the hull is the payload.
And if the plan is to do this; you want to prepare the rocket for this purpose anyway so nothing stops you from making a thicker wall and sacrificing payload capacity since the hull is the payload.