82957871 has 2 divisors, whose sum is σ = 82957872. Its totient is φ = 82957870.

The previous prime is 82957843. The next prime is 82957873. The reversal of 82957871 is 17875928.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82957871 is a prime.

Together with 82957873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82957873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41478935 + 41478936.

It is an arithmetic number, because the mean of its divisors is an integer number (41478936).

Almost surely, 2^82957871 is an apocalyptic number.

82957871 is a deficient number, since it is larger than the sum of its proper divisors (1).

82957871 is an equidigital number, since it uses as much as digits as its factorization.

82957871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 47.

The square root of 82957871 is about 9108.1211564186. The cubic root of 82957871 is about 436.1332515726.

The spelling of 82957871 in words is "eighty-two million, nine hundred fifty-seven thousand, eight hundred seventy-one".