85243271 has 2 divisors, whose sum is σ = 85243272. Its totient is φ = 85243270.

The previous prime is 85243237. The next prime is 85243303. The reversal of 85243271 is 17234258.

It is an a-pointer prime, because the next prime (85243303) can be obtained adding 85243271 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85243271 - 2¹⁴ = 85226887 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85243231) 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, 42621635 + 42621636.

It is an arithmetic number, because the mean of its divisors is an integer number (42621636).

Almost surely, 2^85243271 is an apocalyptic number.

85243271 is a deficient number, since it is larger than the sum of its proper divisors (1).

85243271 is an equidigital number, since it uses as much as digits as its factorization.

85243271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 85243271 is about 9232.7282533388. The cubic root of 85243271 is about 440.1020269601.

The spelling of 85243271 in words is "eighty-five million, two hundred forty-three thousand, two hundred seventy-one".