2571871 has 2 divisors, whose sum is σ = 2571872. Its totient is φ = 2571870.

The previous prime is 2571851. The next prime is 2571893. The reversal of 2571871 is 1781752.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2571871 - 2¹¹ = 2569823 is a prime.

It is a super-2 number, since 2×2571871² = 13229040881282, which contains 22 as substring.

2571871 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2571851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1285935 + 1285936.

It is an arithmetic number, because the mean of its divisors is an integer number (1285936).

2^2571871 is an apocalyptic number.

2571871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2571871 is an equidigital number, since it uses as much as digits as its factorization.

2571871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3920, while the sum is 31.

The square root of 2571871 is about 1603.7053968856. The cubic root of 2571871 is about 137.0091989490.

The spelling of 2571871 in words is "two million, five hundred seventy-one thousand, eight hundred seventy-one".