20117179 has 2 divisors, whose sum is σ = 20117180. Its totient is φ = 20117178.

The previous prime is 20117173. The next prime is 20117231. The reversal of 20117179 is 97171102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20117179 - 2⁹ = 20116667 is a prime.

It is not a weakly prime, because it can be changed into another prime (20117173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10058589 + 10058590.

It is an arithmetic number, because the mean of its divisors is an integer number (10058590).

Almost surely, 2^20117179 is an apocalyptic number.

20117179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20117179 is an equidigital number, since it uses as much as digits as its factorization.

20117179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 20117179 is about 4485.2178319453. The cubic root of 20117179 is about 271.9708509349.

The spelling of 20117179 in words is "twenty million, one hundred seventeen thousand, one hundred seventy-nine".