20080001 has 4 divisors (see below), whose sum is σ = 20420400. Its totient is φ = 19739604.

The previous prime is 20079991. The next prime is 20080003. The reversal of 20080001 is 10008002.

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 20080001 - 2¹⁸ = 19817857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20080003) 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, 170111 + ... + 170228.

It is an arithmetic number, because the mean of its divisors is an integer number (5105100).

Almost surely, 2^20080001 is an apocalyptic number.

It is an amenable number.

20080001 is a deficient number, since it is larger than the sum of its proper divisors (340399).

20080001 is an equidigital number, since it uses as much as digits as its factorization.

20080001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340398.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 20080001 is about 4481.0714120621. The cubic root of 20080001 is about 271.8032070268.

Adding to 20080001 its reverse (10008002), we get a palindrome (30088003).

The spelling of 20080001 in words is "twenty million, eighty thousand, one".