85271863 has 2 divisors, whose sum is σ = 85271864. Its totient is φ = 85271862.

The previous prime is 85271821. The next prime is 85271887. The reversal of 85271863 is 36817258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85271863 - 2²⁵ = 51717431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85271063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42635931 + 42635932.

It is an arithmetic number, because the mean of its divisors is an integer number (42635932).

Almost surely, 2^85271863 is an apocalyptic number.

85271863 is a deficient number, since it is larger than the sum of its proper divisors (1).

85271863 is an equidigital number, since it uses as much as digits as its factorization.

85271863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 85271863 is about 9234.2765282398. The cubic root of 85271863 is about 440.1512272874.

The spelling of 85271863 in words is "eighty-five million, two hundred seventy-one thousand, eight hundred sixty-three".