520343269 has 4 divisors (see below), whose sum is σ = 520482240. Its totient is φ = 520204300.

The previous prime is 520343267. The next prime is 520343279. The reversal of 520343269 is 962343025.

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 520343269 - 2¹ = 520343267 is a prime.

It is a super-2 number, since 2×520343269² = 541514235187212722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520343267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63709 + ... + 71410.

It is an arithmetic number, because the mean of its divisors is an integer number (130120560).

Almost surely, 2^520343269 is an apocalyptic number.

It is an amenable number.

520343269 is a deficient number, since it is larger than the sum of its proper divisors (138971).

520343269 is a wasteful number, since it uses less digits than its factorization.

520343269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138970.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 520343269 is about 22811.0339309730. The cubic root of 520343269 is about 804.3220602971.

The spelling of 520343269 in words is "five hundred twenty million, three hundred forty-three thousand, two hundred sixty-nine".