520297369 has 4 divisors (see below), whose sum is σ = 526566096. Its totient is φ = 514028644.

The previous prime is 520297363. The next prime is 520297373. The reversal of 520297369 is 963792025.

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 520297369 - 2³ = 520297361 is a prime.

It is a super-2 number, since 2×520297369² = 541418704376644322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520297361) 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, 3134239 + ... + 3134404.

It is an arithmetic number, because the mean of its divisors is an integer number (131641524).

Almost surely, 2^520297369 is an apocalyptic number.

It is an amenable number.

520297369 is a deficient number, since it is larger than the sum of its proper divisors (6268727).

520297369 is an equidigital number, since it uses as much as digits as its factorization.

520297369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6268726.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 520297369 is about 22810.0278167301. The cubic root of 520297369 is about 804.2984095840.

The spelling of 520297369 in words is "five hundred twenty million, two hundred ninety-seven thousand, three hundred sixty-nine".