803021 has 4 divisors (see below), whose sum is σ = 809472. Its totient is φ = 796572.

The previous prime is 802987. The next prime is 803027. The reversal of 803021 is 120308.

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 803021 - 2¹⁸ = 540877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 802987 and 803005.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 803021.

It is not an unprimeable number, because it can be changed into a prime (803027) 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, 3035 + ... + 3288.

It is an arithmetic number, because the mean of its divisors is an integer number (202368).

2⁸⁰³⁰²¹ is an apocalyptic number.

It is an amenable number.

803021 is a deficient number, since it is larger than the sum of its proper divisors (6451).

803021 is a wasteful number, since it uses less digits than its factorization.

803021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6450.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 803021 is about 896.1143900195. The cubic root of 803021 is about 92.9484818915.

Adding to 803021 its reverse (120308), we get a palindrome (923329).

The spelling of 803021 in words is "eight hundred three thousand, twenty-one".