853321 has 8 divisors (see below), whose sum is σ = 983360. Its totient is φ = 725328.

The previous prime is 853319. The next prime is 853339. The reversal of 853321 is 123358.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 853321 - 2¹ = 853319 is a prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 853292 and 853301.

It is not an unprimeable number, because it can be changed into a prime (851321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535 + ... + 1411.

It is an arithmetic number, because the mean of its divisors is an integer number (122920).

2⁸⁵³³²¹ is an apocalyptic number.

It is an amenable number.

853321 is a deficient number, since it is larger than the sum of its proper divisors (130039).

853321 is a wasteful number, since it uses less digits than its factorization.

853321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023.

The product of its digits is 720, while the sum is 22.

The square root of 853321 is about 923.7537550668. The cubic root of 853321 is about 94.8500311555.

Adding to 853321 its reverse (123358), we get a palindrome (976679).

The spelling of 853321 in words is "eight hundred fifty-three thousand, three hundred twenty-one".