85327221 has 16 divisors (see below), whose sum is σ = 134217728. Its totient is φ = 47185200.

The previous prime is 85327219. The next prime is 85327241. The reversal of 85327221 is 12272358.

It is not a de Polignac number, because 85327221 - 2¹ = 85327219 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85327211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64885 + ... + 66186.

It is an arithmetic number, because the mean of its divisors is an integer number (8388608).

Almost surely, 2^85327221 is an apocalyptic number.

It is an amenable number.

85327221 is a deficient number, since it is larger than the sum of its proper divisors (48890507).

85327221 is a wasteful number, since it uses less digits than its factorization.

85327221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131112.

The product of its digits is 6720, while the sum is 30.

The square root of 85327221 is about 9237.2734613629. The cubic root of 85327221 is about 440.2464545600.

Adding to 85327221 its reverse (12272358), we get a palindrome (97599579).

It can be divided in two parts, 8532 and 7221, that added together give a triangular number (15753 = T₁₇₇).

The spelling of 85327221 in words is "eighty-five million, three hundred twenty-seven thousand, two hundred twenty-one".