2560871 has 2 divisors, whose sum is σ = 2560872. Its totient is φ = 2560870.

The previous prime is 2560849. The next prime is 2560891. The reversal of 2560871 is 1780652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2560871 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2560891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280435 + 1280436.

It is an arithmetic number, because the mean of its divisors is an integer number (1280436).

2^2560871 is an apocalyptic number.

2560871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2560871 is an equidigital number, since it uses as much as digits as its factorization.

2560871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2560871 is about 1600.2721643521. The cubic root of 2560871 is about 136.8135884442.

The spelling of 2560871 in words is "two million, five hundred sixty thousand, eight hundred seventy-one".