85145271 has 4 divisors (see below), whose sum is σ = 113527032. Its totient is φ = 56763512.

The previous prime is 85145267. The next prime is 85145273. The reversal of 85145271 is 17254158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85145271 - 2² = 85145267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85145273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14190876 + ... + 14190881.

It is an arithmetic number, because the mean of its divisors is an integer number (28381758).

Almost surely, 2^85145271 is an apocalyptic number.

85145271 is a deficient number, since it is larger than the sum of its proper divisors (28381761).

85145271 is a wasteful number, since it uses less digits than its factorization.

85145271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28381760.

The product of its digits is 11200, while the sum is 33.

The square root of 85145271 is about 9227.4195201042. The cubic root of 85145271 is about 439.9333077292.

The spelling of 85145271 in words is "eighty-five million, one hundred forty-five thousand, two hundred seventy-one".