2065571 has 2 divisors, whose sum is σ = 2065572. Its totient is φ = 2065570.

The previous prime is 2065559. The next prime is 2065573. The reversal of 2065571 is 1755602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2065571 - 2¹⁰ = 2064547 is a prime.

Together with 2065573, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2065571.

It is not a weakly prime, because it can be changed into another prime (2065573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032785 + 1032786.

It is an arithmetic number, because the mean of its divisors is an integer number (1032786).

2^2065571 is an apocalyptic number.

2065571 is a deficient number, since it is larger than the sum of its proper divisors (1).

2065571 is an equidigital number, since it uses as much as digits as its factorization.

2065571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2065571 is about 1437.2094488974. The cubic root of 2065571 is about 127.3542304333.

The spelling of 2065571 in words is "two million, sixty-five thousand, five hundred seventy-one".