20059 has 4 divisors (see below), whose sum is σ = 21616. Its totient is φ = 18504.

The previous prime is 20051. The next prime is 20063. The reversal of 20059 is 95002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95002 = 2 ⋅47501.

It is a cyclic number.

It is not a de Polignac number, because 20059 - 2³ = 20051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20051) 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, 759 + ... + 784.

It is an arithmetic number, because the mean of its divisors is an integer number (5404).

2²⁰⁰⁵⁹ is an apocalyptic number.

20059 is a deficient number, since it is larger than the sum of its proper divisors (1557).

20059 is a wasteful number, since it uses less digits than its factorization.

20059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 20059 is about 141.6297991243. The cubic root of 20059 is about 27.1708417352.

The spelling of 20059 in words is "twenty thousand, fifty-nine".