520413447 has 4 divisors (see below), whose sum is σ = 693884600. Its totient is φ = 346942296.

The previous prime is 520413437. The next prime is 520413449. The reversal of 520413447 is 744314025.

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

It is not a de Polignac number, because 520413447 - 2⁷ = 520413319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520413449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86735572 + ... + 86735577.

It is an arithmetic number, because the mean of its divisors is an integer number (173471150).

Almost surely, 2^520413447 is an apocalyptic number.

520413447 is a deficient number, since it is larger than the sum of its proper divisors (173471153).

520413447 is a wasteful number, since it uses less digits than its factorization.

520413447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173471152.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 520413447 is about 22812.5721259134. The cubic root of 520413447 is about 804.3582179515.

The spelling of 520413447 in words is "five hundred twenty million, four hundred thirteen thousand, four hundred forty-seven".