520769431 has 16 divisors (see below), whose sum is σ = 655857664. Its totient is φ = 402452064.

The previous prime is 520769411. The next prime is 520769489. The reversal of 520769431 is 134967025.

It is not a de Polignac number, because 520769431 - 2²³ = 512380823 is a prime.

It is a super-2 number, since 2×520769431² = 542401600528127522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520769411) 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 15 ways as a sum of consecutive naturals, for example, 62631 + ... + 70456.

It is an arithmetic number, because the mean of its divisors is an integer number (40991104).

Almost surely, 2^520769431 is an apocalyptic number.

520769431 is a deficient number, since it is larger than the sum of its proper divisors (135088233).

520769431 is a wasteful number, since it uses less digits than its factorization.

520769431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133150.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 520769431 is about 22820.3731564582. The cubic root of 520769431 is about 804.5415807458.

The spelling of 520769431 in words is "five hundred twenty million, seven hundred sixty-nine thousand, four hundred thirty-one".