520269289 has 8 divisors (see below), whose sum is σ = 526050720. Its totient is φ = 514508736.

The previous prime is 520269287. The next prime is 520269319. The reversal of 520269289 is 982962025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520269289 - 2¹ = 520269287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520269283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47842 + ... + 57700.

It is an arithmetic number, because the mean of its divisors is an integer number (65756340).

Almost surely, 2^520269289 is an apocalyptic number.

It is an amenable number.

520269289 is a deficient number, since it is larger than the sum of its proper divisors (5781431).

520269289 is a wasteful number, since it uses less digits than its factorization.

520269289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10439.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 520269289 is about 22809.4122896667. The cubic root of 520269289 is about 804.2839402267.

The spelling of 520269289 in words is "five hundred twenty million, two hundred sixty-nine thousand, two hundred eighty-nine".