520386417 has 16 divisors (see below), whose sum is σ = 776575680. Its totient is φ = 344389536.

The previous prime is 520386401. The next prime is 520386443. The reversal of 520386417 is 714683025.

520386417 is a `hidden beast` number, since 5 + 2 + 0 + 3 + 8 + 641 + 7 = 666.

It is not a de Polignac number, because 520386417 - 2⁴ = 520386401 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (520386457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66643 + ... + 74040.

It is an arithmetic number, because the mean of its divisors is an integer number (48535980).

Almost surely, 2^520386417 is an apocalyptic number.

It is an amenable number.

520386417 is a deficient number, since it is larger than the sum of its proper divisors (256189263).

520386417 is a wasteful number, since it uses less digits than its factorization.

520386417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140829 (or 140823 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 520386417 is about 22811.9796817374. The cubic root of 520386417 is about 804.3442917298.

The spelling of 520386417 in words is "five hundred twenty million, three hundred eighty-six thousand, four hundred seventeen".