520405017 has 8 divisors (see below), whose sum is σ = 756952800. Its totient is φ = 315396960.

The previous prime is 520405001. The next prime is 520405033. The reversal of 520405017 is 710504025.

It is an interprime number because it is at equal distance from previous prime (520405001) and next prime (520405033).

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

It is not a de Polignac number, because 520405017 - 2⁴ = 520405001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520415017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7884892 + ... + 7884957.

It is an arithmetic number, because the mean of its divisors is an integer number (94619100).

Almost surely, 2^520405017 is an apocalyptic number.

It is an amenable number.

520405017 is a deficient number, since it is larger than the sum of its proper divisors (236547783).

520405017 is a wasteful number, since it uses less digits than its factorization.

520405017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15769863.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 520405017 is about 22812.3873586260. The cubic root of 520405017 is about 804.3538747532.

The spelling of 520405017 in words is "five hundred twenty million, four hundred five thousand, seventeen".