2005541171 has 2 divisors, whose sum is σ = 2005541172. Its totient is φ = 2005541170.

The previous prime is 2005541159. The next prime is 2005541203. The reversal of 2005541171 is 1711455002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005541171 - 2¹⁸ = 2005279027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2005541171.

It is not a weakly prime, because it can be changed into another prime (2005541101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002770585 + 1002770586.

It is an arithmetic number, because the mean of its divisors is an integer number (1002770586).

Almost surely, 2^2005541171 is an apocalyptic number.

2005541171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005541171 is an equidigital number, since it uses as much as digits as its factorization.

2005541171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 2005541171 is about 44783.2688735425. The cubic root of 2005541171 is about 1261.0835499504.

Adding to 2005541171 its reverse (1711455002), we get a palindrome (3716996173).

The spelling of 2005541171 in words is "two billion, five million, five hundred forty-one thousand, one hundred seventy-one".