85181227 has 4 divisors (see below), whose sum is σ = 85201200. Its totient is φ = 85161256.

The previous prime is 85181219. The next prime is 85181251. The reversal of 85181227 is 72218158.

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 85181227 - 2³ = 85181219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85181192 and 85181201.

It is not an unprimeable number, because it can be changed into a prime (85181287) 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, 727 + ... + 13072.

It is an arithmetic number, because the mean of its divisors is an integer number (21300300).

Almost surely, 2^85181227 is an apocalyptic number.

85181227 is a deficient number, since it is larger than the sum of its proper divisors (19973).

85181227 is a wasteful number, since it uses less digits than its factorization.

85181227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19972.

The product of its digits is 8960, while the sum is 34.

The square root of 85181227 is about 9229.3676381429. The cubic root of 85181227 is about 439.9952254992.

The spelling of 85181227 in words is "eighty-five million, one hundred eighty-one thousand, two hundred twenty-seven".