159315221 has 8 divisors (see below), whose sum is σ = 172435200. Its totient is φ = 146318832.

The previous prime is 159315203. The next prime is 159315239. The reversal of 159315221 is 122513951.

It is an interprime number because it is at equal distance from previous prime (159315203) and next prime (159315239).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 159315221 - 2⁶ = 159315157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159315421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28205 + ... + 33378.

It is an arithmetic number, because the mean of its divisors is an integer number (21554400).

Almost surely, 2^159315221 is an apocalyptic number.

It is an amenable number.

159315221 is a deficient number, since it is larger than the sum of its proper divisors (13119979).

159315221 is a wasteful number, since it uses less digits than its factorization.

159315221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61795.

The product of its digits is 2700, while the sum is 29.

The square root of 159315221 is about 12622.0133496998. The cubic root of 159315221 is about 542.1079257036.

The spelling of 159315221 in words is "one hundred fifty-nine million, three hundred fifteen thousand, two hundred twenty-one".