Can I retire at 55 with $3 million?

I'm curious, is it realistic to expect to retire at the age of 55 with a savings of $3 million? Given the current state of the economy, inflation rates, and potential market fluctuations in cryptocurrency and traditional investments, how would one go about ensuring their retirement funds are sufficient and secure? Are there any specific strategies or investments that would be more advantageous than others in achieving this goal? Additionally, what are the potential risks associated with relying solely on cryptocurrency for retirement savings?