85237171 has 2 divisors, whose sum is σ = 85237172. Its totient is φ = 85237170.

The previous prime is 85237157. The next prime is 85237181. The reversal of 85237171 is 17173258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85237171 - 2⁹ = 85236659 is a prime.

It is not a weakly prime, because it can be changed into another prime (85237111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42618585 + 42618586.

It is an arithmetic number, because the mean of its divisors is an integer number (42618586).

Almost surely, 2^85237171 is an apocalyptic number.

85237171 is a deficient number, since it is larger than the sum of its proper divisors (1).

85237171 is an equidigital number, since it uses as much as digits as its factorization.

85237171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 34.

The square root of 85237171 is about 9232.3979008706. The cubic root of 85237171 is about 440.0915288239.

The spelling of 85237171 in words is "eighty-five million, two hundred thirty-seven thousand, one hundred seventy-one".