85280771 has 2 divisors, whose sum is σ = 85280772. Its totient is φ = 85280770.

The previous prime is 85280753. The next prime is 85280773. The reversal of 85280771 is 17708258.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85280771 is a prime.

Together with 85280773, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85280773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42640385 + 42640386.

It is an arithmetic number, because the mean of its divisors is an integer number (42640386).

Almost surely, 2^85280771 is an apocalyptic number.

85280771 is a deficient number, since it is larger than the sum of its proper divisors (1).

85280771 is an equidigital number, since it uses as much as digits as its factorization.

85280771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 85280771 is about 9234.7588490442. The cubic root of 85280771 is about 440.1665536818.

The spelling of 85280771 in words is "eighty-five million, two hundred eighty thousand, seven hundred seventy-one".