20203159 has 4 divisors (see below), whose sum is σ = 20324304. Its totient is φ = 20082016.

The previous prime is 20203151. The next prime is 20203187. The reversal of 20203159 is 95130202.

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 20203159 - 2³ = 20203151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203151) 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, 60322 + ... + 60655.

It is an arithmetic number, because the mean of its divisors is an integer number (5081076).

Almost surely, 2^20203159 is an apocalyptic number.

20203159 is a deficient number, since it is larger than the sum of its proper divisors (121145).

20203159 is a wasteful number, since it uses less digits than its factorization.

20203159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121144.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 20203159 is about 4494.7924312475. The cubic root of 20203159 is about 272.3577643366.

The spelling of 20203159 in words is "twenty million, two hundred three thousand, one hundred fifty-nine".