822001 has 4 divisors (see below), whose sum is σ = 870372. Its totient is φ = 773632.

The previous prime is 821999. The next prime is 822007. The reversal of 822001 is 100228.

822001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 303601 + 518400 = 551^2 + 720^2 .

It is a cyclic number.

It is not a de Polignac number, because 822001 - 2¹ = 821999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (822007) 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, 24160 + ... + 24193.

It is an arithmetic number, because the mean of its divisors is an integer number (217593).

2⁸²²⁰⁰¹ is an apocalyptic number.

It is an amenable number.

822001 is a deficient number, since it is larger than the sum of its proper divisors (48371).

822001 is a wasteful number, since it uses less digits than its factorization.

822001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48370.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 822001 is about 906.6427080168. The cubic root of 822001 is about 93.6750891956.

Adding to 822001 its reverse (100228), we get a palindrome (922229).

The spelling of 822001 in words is "eight hundred twenty-two thousand, one".