2566171 has 2 divisors, whose sum is σ = 2566172. Its totient is φ = 2566170.

The previous prime is 2566163. The next prime is 2566177. The reversal of 2566171 is 1716652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2566171 - 2³ = 2566163 is a prime.

It is a Chen prime.

2566171 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2566177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283085 + 1283086.

It is an arithmetic number, because the mean of its divisors is an integer number (1283086).

2^2566171 is an apocalyptic number.

2566171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566171 is an equidigital number, since it uses as much as digits as its factorization.

2566171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 28.

The square root of 2566171 is about 1601.9272767514. The cubic root of 2566171 is about 136.9079069216.

The spelling of 2566171 in words is "two million, five hundred sixty-six thousand, one hundred seventy-one".