520412003 has 4 divisors (see below), whose sum is σ = 520483248. Its totient is φ = 520340760.

The previous prime is 520411999. The next prime is 520412017. The reversal of 520412003 is 300214025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520412003 - 2² = 520411999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520412023) 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, 23228 + ... + 39753.

It is an arithmetic number, because the mean of its divisors is an integer number (130120812).

Almost surely, 2^520412003 is an apocalyptic number.

520412003 is a deficient number, since it is larger than the sum of its proper divisors (71245).

520412003 is an equidigital number, since it uses as much as digits as its factorization.

520412003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71244.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 520412003 is about 22812.5404766764. The cubic root of 520412003 is about 804.3574739953.

Adding to 520412003 its reverse (300214025), we get a palindrome (820626028).

The spelling of 520412003 in words is "five hundred twenty million, four hundred twelve thousand, three".