Probably like Phoenix.
3.7 mil? That sure is close. You'd think the star would have all but vaporized this planet. That thing has to look and feel like a big ball bearing.
If it has a period of 5.4 days, then the estimation of mass may have been via the displacement of the red dwarf. If it were further out, like say a billion miles, then the planet's influence on the star would have been a lot less, since gravity follows an inverse square function.
Also keep in mind that the red dwarf has a much lower heat output than the Sun, thus it would not be like an object that would be orbiting 3.7 million miles from the Sun. Still it might be questionable if this is a gas giant like Neptune. At that distance would much of the atmosphere cook off? Maybe someone in that field more qualified to run the numbers.
3.7 mil? That sure is close. You'd think the star would have all but vaporized this planet. That thing has to look and feel like a big ball bearing.
We could verify this by listening for Spanish-language radio signals.
However, the star is only 1.3% as luminous as the sun. Therefore, it's probably not nearly as hot as you'd think...may well be similar to Earth in temperature.