800005001 has 4 divisors (see below), whose sum is σ = 817026432. Its totient is φ = 782983572.

The previous prime is 800004979. The next prime is 800005007. The reversal of 800005001 is 100500008.

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 a de Polignac number, because none of the positive numbers 2^k-800005001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (800005007) 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, 8510645 + ... + 8510738.

It is an arithmetic number, because the mean of its divisors is an integer number (204256608).

Almost surely, 2^800005001 is an apocalyptic number.

It is an amenable number.

800005001 is a deficient number, since it is larger than the sum of its proper divisors (17021431).

800005001 is a wasteful number, since it uses less digits than its factorization.

800005001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17021430.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 800005001 is about 28284.3596533491. The cubic root of 800005001 is about 928.3197011007.

Adding to 800005001 its reverse (100500008), we get a palindrome (900505009).

The spelling of 800005001 in words is "eight hundred million, five thousand, one".