520256433 has 8 divisors (see below), whose sum is σ = 717595200. Its totient is φ = 334877648.

The previous prime is 520256411. The next prime is 520256447. The reversal of 520256433 is 334652025.

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 520256433 - 2¹⁶ = 520190897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520256433.

It is not an unprimeable number, because it can be changed into a prime (520256483) 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, 2989893 + ... + 2990066.

It is an arithmetic number, because the mean of its divisors is an integer number (89699400).

Almost surely, 2^520256433 is an apocalyptic number.

It is an amenable number.

520256433 is a deficient number, since it is larger than the sum of its proper divisors (197338767).

520256433 is a wasteful number, since it uses less digits than its factorization.

520256433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5979991.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 520256433 is about 22809.1304744394. The cubic root of 520256433 is about 804.2773154782.

The spelling of 520256433 in words is "five hundred twenty million, two hundred fifty-six thousand, four hundred thirty-three".