159973 has 4 divisors (see below), whose sum is σ = 174528. Its totient is φ = 145420.

The previous prime is 159937. The next prime is 159977. The reversal of 159973 is 379951.

159973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 159973 - 2¹⁷ = 28901 is a prime.

It is a Duffinian number.

159973 is a lucky number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7261 + ... + 7282.

It is an arithmetic number, because the mean of its divisors is an integer number (43632).

2¹⁵⁹⁹⁷³ is an apocalyptic number.

It is an amenable number.

159973 is a deficient number, since it is larger than the sum of its proper divisors (14555).

159973 is a wasteful number, since it uses less digits than its factorization.

159973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14554.

The product of its digits is 8505, while the sum is 34.

The square root of 159973 is about 399.9662485761. The cubic root of 159973 is about 54.2852984403.

The spelling of 159973 in words is "one hundred fifty-nine thousand, nine hundred seventy-three".