85822871 has 2 divisors, whose sum is σ = 85822872. Its totient is φ = 85822870.

The previous prime is 85822859. The next prime is 85822873. The reversal of 85822871 is 17822858.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85822871 is a prime.

Together with 85822873, 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 (85822873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42911435 + 42911436.

It is an arithmetic number, because the mean of its divisors is an integer number (42911436).

Almost surely, 2^85822871 is an apocalyptic number.

85822871 is a deficient number, since it is larger than the sum of its proper divisors (1).

85822871 is an equidigital number, since it uses as much as digits as its factorization.

85822871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 41.

The square root of 85822871 is about 9264.0634173132. The cubic root of 85822871 is about 441.0972459825.

The spelling of 85822871 in words is "eighty-five million, eight hundred twenty-two thousand, eight hundred seventy-one".