520020003 has 8 divisors (see below), whose sum is σ = 695919616. Its totient is φ = 345400200.

The previous prime is 520020001. The next prime is 520020019. The reversal of 520020003 is 300020025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520020003 - 2¹ = 520020001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520020001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319003 + ... + 320628.

It is an arithmetic number, because the mean of its divisors is an integer number (86989952).

Almost surely, 2^520020003 is an apocalyptic number.

520020003 is a deficient number, since it is larger than the sum of its proper divisors (175899613).

520020003 is a wasteful number, since it uses less digits than its factorization.

520020003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639905.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 520020003 is about 22803.9470925540. The cubic root of 520020003 is about 804.1554626853.

Adding to 520020003 its reverse (300020025), we get a palindrome (820040028).

The spelling of 520020003 in words is "five hundred twenty million, twenty thousand, three".