520289297 has 4 divisors (see below), whose sum is σ = 567588336. Its totient is φ = 472990260.

The previous prime is 520289249. The next prime is 520289311. The reversal of 520289297 is 792982025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520289297 - 2⁸ = 520289041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520286297) 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, 23649503 + ... + 23649524.

It is an arithmetic number, because the mean of its divisors is an integer number (141897084).

Almost surely, 2^520289297 is an apocalyptic number.

It is an amenable number.

520289297 is a deficient number, since it is larger than the sum of its proper divisors (47299039).

520289297 is a wasteful number, since it uses less digits than its factorization.

520289297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47299038.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 520289297 is about 22809.8508763210. The cubic root of 520289297 is about 804.2942502124.

The spelling of 520289297 in words is "five hundred twenty million, two hundred eighty-nine thousand, two hundred ninety-seven".