159216217 has 16 divisors (see below), whose sum is σ = 170278912. Its totient is φ = 148599360.

The previous prime is 159216199. The next prime is 159216227. The reversal of 159216217 is 712612951.

It is a cyclic number.

It is not a de Polignac number, because 159216217 - 2⁷ = 159216089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159216227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145123 + ... + 146215.

It is an arithmetic number, because the mean of its divisors is an integer number (10642432).

Almost surely, 2^159216217 is an apocalyptic number.

It is an amenable number.

159216217 is a deficient number, since it is larger than the sum of its proper divisors (11062695).

159216217 is a wasteful number, since it uses less digits than its factorization.

159216217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288.

The product of its digits is 7560, while the sum is 34.

The square root of 159216217 is about 12618.0908619331. The cubic root of 159216217 is about 541.9956075496.

The spelling of 159216217 in words is "one hundred fifty-nine million, two hundred sixteen thousand, two hundred seventeen".