85286321 has 4 divisors (see below), whose sum is σ = 85383792. Its totient is φ = 85188852.

The previous prime is 85286317. The next prime is 85286359. The reversal of 85286321 is 12368258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85286321 - 2² = 85286317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85286021) 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, 47411 + ... + 49176.

It is an arithmetic number, because the mean of its divisors is an integer number (21345948).

Almost surely, 2^85286321 is an apocalyptic number.

It is an amenable number.

85286321 is a deficient number, since it is larger than the sum of its proper divisors (97471).

85286321 is an equidigital number, since it uses as much as digits as its factorization.

85286321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97470.

The product of its digits is 23040, while the sum is 35.

The square root of 85286321 is about 9235.0593392788. The cubic root of 85286321 is about 440.1761020296.

The spelling of 85286321 in words is "eighty-five million, two hundred eighty-six thousand, three hundred twenty-one".