Islam is a monotheistic religion that sees itself as very distant from heathen polytheism. It is, however, a "heathen" religion in that it does not know Christ as the Savior. Islam rejects the Trinity, the deity of Christ, and the gospel of his death as a payment for sin.
Islam is a religion of the Law, very similar in many ways to Pharisaic Judaism. Islam teaches that if Muslims do more good than evil, they can be saved. Its ceremonial laws are a variant of those of Judaism (no pork, no alcohol, etc.).
Its central confession is that there is no God but Allah and Muhammad is his messenger or prophet. It recognizes Moses, David, and Jesus as preliminary prophets, but Muhammad is believed to be the last and greatest prophet for all people. It emphasizes prayer, fasting, pilgrimage, and charity among its religious works.