I need advice

Renting a self contain apartment is included

If by "stay", you mean visit for like a month or less, then yes it should be enough if you're frugal. But if it's for longer stay and to consequently establish yourself as a resident, then I'm sorry to announce that it's not enough.

It could have been like ten years ago when naira still have value, but as naira lost about 120% of its value since the last decade, the effect is much felt when one travels out of the country. And Ghana is more expensive to live in than Nigeria.

#500k is enough for you to stay in Accra, feed for some month too,

But before I can give you advice/help you with your stay, I need to know the kinda job you do here, so you don't come here and be caught in the webm

You have to be 100% legit