8021001 has 8 divisors (see below), whose sum is σ = 10730304. Its totient is φ = 5329520.

The previous prime is 8020993. The next prime is 8021003. The reversal of 8021001 is 1001208.

It is a happy number.

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 8021001 - 2³ = 8020993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8021003) 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, 3366 + ... + 5231.

It is an arithmetic number, because the mean of its divisors is an integer number (1341288).

Almost surely, 2^8021001 is an apocalyptic number.

It is an amenable number.

8021001 is a deficient number, since it is larger than the sum of its proper divisors (2709303).

8021001 is a wasteful number, since it uses less digits than its factorization.

8021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8911.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 8021001 is about 2832.1371788810. The cubic root of 8021001 is about 200.1748554167.

Adding to 8021001 its reverse (1001208), we get a palindrome (9022209).

The spelling of 8021001 in words is "eight million, twenty-one thousand, one".