2511871 has 2 divisors, whose sum is σ = 2511872. Its totient is φ = 2511870.

The previous prime is 2511851. The next prime is 2511881. The reversal of 2511871 is 1781152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2511871 - 2¹¹ = 2509823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2511811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1255935 + 1255936.

It is an arithmetic number, because the mean of its divisors is an integer number (1255936).

2^2511871 is an apocalyptic number.

2511871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2511871 is an equidigital number, since it uses as much as digits as its factorization.

2511871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 560, while the sum is 25.

The square root of 2511871 is about 1584.8883241415. Note that the first 3 decimals coincide. The cubic root of 2511871 is about 135.9353607185.

The spelling of 2511871 in words is "two million, five hundred eleven thousand, eight hundred seventy-one".