Styx

The name Styx is primarily a gender-neutral name of the Greek origin. However, it is more common among females. The meaning of the name Styx is ‘shuddering’. The name Styx comes from the Ancient Greek word stúx, which comes from the words stúgéo or stúgo which means ‘hate’, ‘detest', ‘gloomy’, ‘dismal’ and ‘murky’.
In Greek mythology, the Styx is a river that served as a dicide between Earth and the underworld, which is often referred to as Hades. Styx was also the Titan goddess of oaths. 
Styx, the daughter of Oceanus and Tethys, also bore this name. She was the spouse of Pallas and the mother of Zelus, Nike, and Kratos. Styx helped Zeus out in the Titanomachy where she was the first one to rush to his aid. Because of this, her name would be honored, a binding oath for the gods.
Additionally, there is an American rock group by the name Styx who have produced singles including 'Mr. Roboto' and 'Come Sail Away'.
There is the popular belief that those who bear the name Styx have a majestic presence and a deep sense of emotion.

Gender

Girl

Of course, this is a neutral name.

Meaning

the hateful

Origin

Greek

Numerology

S is for smile, it gives you face value.

T is for tender, loving nature.

Y is for yearn, your innermost desires.

X is for x, the mysterious side of you!

Lucky

Styx lucky number is 7.

The detectives of numerology, 7 is known for its investigative abilities and analytical skills. Astrologically, the number 7 can be thought of as a blend of Virgo and Scorpio energy: 7 is extremely detail-oriented, but is driven by inner-wisdom as opposed to tangible realities.