159159073 has 4 divisors (see below), whose sum is σ = 159197508. Its totient is φ = 159120640.

The previous prime is 159159041. The next prime is 159159079. The reversal of 159159073 is 370951951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370951951 = 17 ⋅21820703.

It can be written as a sum of positive squares in 2 ways, for example, as 51165409 + 107993664 = 7153^2 + 10392^2 .

It is a cyclic number.

It is not a de Polignac number, because 159159073 - 2⁵ = 159159041 is a prime.

It is a super-2 number, since 2×159159073² = 50663221036438658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159159079) 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, 12136 + ... + 21577.

It is an arithmetic number, because the mean of its divisors is an integer number (39799377).

Almost surely, 2^159159073 is an apocalyptic number.

It is an amenable number.

159159073 is a deficient number, since it is larger than the sum of its proper divisors (38435).

159159073 is an equidigital number, since it uses as much as digits as its factorization.

159159073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38434.

The product of its (nonzero) digits is 42525, while the sum is 40.

The square root of 159159073 is about 12615.8262908142. The cubic root of 159159073 is about 541.9307575746.

The spelling of 159159073 in words is "one hundred fifty-nine million, one hundred fifty-nine thousand, seventy-three".