159722971 has 8 divisors (see below), whose sum is σ = 169493760. Its totient is φ = 150187752.

The previous prime is 159722963. The next prime is 159722989. The reversal of 159722971 is 179227951.

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 159722971 - 2³ = 159722963 is a prime.

It is a super-2 number, since 2×159722971² = 51022854930133682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159722951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57495 + ... + 60208.

It is an arithmetic number, because the mean of its divisors is an integer number (21186720).

Almost surely, 2^159722971 is an apocalyptic number.

159722971 is a deficient number, since it is larger than the sum of its proper divisors (9770789).

159722971 is a wasteful number, since it uses less digits than its factorization.

159722971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117785.

The product of its digits is 79380, while the sum is 43.

The square root of 159722971 is about 12638.1553638179. The cubic root of 159722971 is about 542.5700204806.

The spelling of 159722971 in words is "one hundred fifty-nine million, seven hundred twenty-two thousand, nine hundred seventy-one".