520003001 has 8 divisors (see below), whose sum is σ = 625567680. Its totient is φ = 422257968.

The previous prime is 520002991. The next prime is 520003007. The reversal of 520003001 is 100300025.

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 520003001 - 2²⁶ = 452894137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520003007) 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, 1954766 + ... + 1955031.

It is an arithmetic number, because the mean of its divisors is an integer number (78195960).

Almost surely, 2^520003001 is an apocalyptic number.

It is an amenable number.

520003001 is a deficient number, since it is larger than the sum of its proper divisors (105564679).

520003001 is a wasteful number, since it uses less digits than its factorization.

520003001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3909823.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 520003001 is about 22803.5743031657. The cubic root of 520003001 is about 804.1466986633.

Adding to 520003001 its reverse (100300025), we get a palindrome (620303026).

The spelling of 520003001 in words is "five hundred twenty million, three thousand, one".