159722071 has 4 divisors (see below), whose sum is σ = 160056000. Its totient is φ = 159388144.

The previous prime is 159722063. The next prime is 159722083. The reversal of 159722071 is 170227951.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 159722071 - 2³ = 159722063 is a prime.

It is a super-2 number, since 2×159722071² = 51022279929058082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159722471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166246 + ... + 167203.

It is an arithmetic number, because the mean of its divisors is an integer number (40014000).

Almost surely, 2^159722071 is an apocalyptic number.

159722071 is a deficient number, since it is larger than the sum of its proper divisors (333929).

159722071 is an equidigital number, since it uses as much as digits as its factorization.

159722071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333928.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 159722071 is about 12638.1197573057. The cubic root of 159722071 is about 542.5690013955.

The spelling of 159722071 in words is "one hundred fifty-nine million, seven hundred twenty-two thousand, seventy-one".