20002159 has 2 divisors, whose sum is σ = 20002160. Its totient is φ = 20002158.

The previous prime is 20002133. The next prime is 20002187. The reversal of 20002159 is 95120002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002159 is a prime.

It is a super-2 number, since 2×20002159² = 800172729322562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001079 + 10001080.

It is an arithmetic number, because the mean of its divisors is an integer number (10001080).

Almost surely, 2^20002159 is an apocalyptic number.

20002159 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002159 is an equidigital number, since it uses as much as digits as its factorization.

20002159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 20002159 is about 4472.3773320238. The cubic root of 20002159 is about 271.4515286874.

The spelling of 20002159 in words is "twenty million, two thousand, one hundred fifty-nine".