First of all we must define the meaning of the word "cult".
The word cult does not imply any good or bad connotation.
The Webster dictionary, defines a cult as a "system of religious beliefs and rituals, as well as its members."
Based on this simple definition, each church can be classified as a cult. Nevertheless, there is another definition which is given in Websters and which is closer to the use of the word as it is employed by theologians and sociologists: "a religion which is considered spurious or not quite orthodox, and also to its members."
Another definition of the word cult is: "a great devotion to a person, idea or thing."
In this sense, the answer is yes.
It is thanks to the word "cult" that we have the word "culture".
The Catholic church is another successful cult.