802321 has 4 divisors (see below), whose sum is σ = 864052. Its totient is φ = 740592.

The previous prime is 802297. The next prime is 802331. The reversal of 802321 is 123208.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96721 + 705600 = 311^2 + 840^2 .

It is a cyclic number.

It is not a de Polignac number, because 802321 - 2⁹ = 801809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 802295 and 802304.

It is not an unprimeable number, because it can be changed into a prime (802331) 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, 30846 + ... + 30871.

It is an arithmetic number, because the mean of its divisors is an integer number (216013).

2⁸⁰²³²¹ is an apocalyptic number.

It is an amenable number.

802321 is a deficient number, since it is larger than the sum of its proper divisors (61731).

802321 is a wasteful number, since it uses less digits than its factorization.

802321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61730.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 802321 is about 895.7237297292. The cubic root of 802321 is about 92.9214660550.

Adding to 802321 its reverse (123208), we get a palindrome (925529).

It can be divided in two parts, 80 and 2321, that added together give a 4-th power (2401 = 7⁴).

The spelling of 802321 in words is "eight hundred two thousand, three hundred twenty-one".