85759171 has 2 divisors, whose sum is σ = 85759172. Its totient is φ = 85759170.

The previous prime is 85759097. The next prime is 85759181. The reversal of 85759171 is 17195758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85759171 - 2⁷ = 85759043 is a prime.

It is not a weakly prime, because it can be changed into another prime (85759181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42879585 + 42879586.

It is an arithmetic number, because the mean of its divisors is an integer number (42879586).

Almost surely, 2^85759171 is an apocalyptic number.

85759171 is a deficient number, since it is larger than the sum of its proper divisors (1).

85759171 is an equidigital number, since it uses as much as digits as its factorization.

85759171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 43.

The square root of 85759171 is about 9260.6247629412. The cubic root of 85759171 is about 440.9880876320.

The spelling of 85759171 in words is "eighty-five million, seven hundred fifty-nine thousand, one hundred seventy-one".