220516171 has 2 divisors, whose sum is σ = 220516172. Its totient is φ = 220516170.

The previous prime is 220516117. The next prime is 220516181. The reversal of 220516171 is 171615022.

Together with previous prime (220516117) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220516171 - 2¹³ = 220507979 is a prime.

It is not a weakly prime, because it can be changed into another prime (220516181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110258085 + 110258086.

It is an arithmetic number, because the mean of its divisors is an integer number (110258086).

Almost surely, 2^220516171 is an apocalyptic number.

220516171 is a deficient number, since it is larger than the sum of its proper divisors (1).

220516171 is an equidigital number, since it uses as much as digits as its factorization.

220516171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 220516171 is about 14849.7869008279. The cubic root of 220516171 is about 604.1528301696.

The spelling of 220516171 in words is "two hundred twenty million, five hundred sixteen thousand, one hundred seventy-one".