85857227 has 4 divisors (see below), whose sum is σ = 86433600. Its totient is φ = 85280856.

The previous prime is 85857221. The next prime is 85857253. The reversal of 85857227 is 72275858.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72275858 = 2 ⋅36137929.

It is a cyclic number.

It is not a de Polignac number, because 85857227 - 2²⁰ = 84808651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85857221) 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, 287963 + ... + 288260.

It is an arithmetic number, because the mean of its divisors is an integer number (21608400).

Almost surely, 2^85857227 is an apocalyptic number.

85857227 is a deficient number, since it is larger than the sum of its proper divisors (576373).

85857227 is a wasteful number, since it uses less digits than its factorization.

85857227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576372.

The product of its digits is 313600, while the sum is 44.

The square root of 85857227 is about 9265.9174936970. The cubic root of 85857227 is about 441.1560970987.

It can be divided in two parts, 858 and 57227, that added together give a palindrome (58085).

The spelling of 85857227 in words is "eighty-five million, eight hundred fifty-seven thousand, two hundred twenty-seven".