85726271 has 4 divisors (see below), whose sum is σ = 90238200. Its totient is φ = 81214344.

The previous prime is 85726247. The next prime is 85726279. The reversal of 85726271 is 17262758.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17262758 = 2 ⋅8631379.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85726271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85726279) 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 in 3 ways as a sum of consecutive naturals, for example, 2255936 + ... + 2255973.

It is an arithmetic number, because the mean of its divisors is an integer number (22559550).

Almost surely, 2^85726271 is an apocalyptic number.

85726271 is a deficient number, since it is larger than the sum of its proper divisors (4511929).

85726271 is a wasteful number, since it uses less digits than its factorization.

85726271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4511928.

The product of its digits is 47040, while the sum is 38.

The square root of 85726271 is about 9258.8482545077. The cubic root of 85726271 is about 440.9316879738.

The spelling of 85726271 in words is "eighty-five million, seven hundred twenty-six thousand, two hundred seventy-one".