520779543 has 8 divisors (see below), whose sum is σ = 704736768. Its totient is φ = 342004344.

The previous prime is 520779529. The next prime is 520779559. The reversal of 520779543 is 345977025.

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

It is not a de Polignac number, because 520779543 - 2¹² = 520775447 is a prime.

It is a super-2 number, since 2×520779543² = 542422664814577698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 520779495 and 520779504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520779503) 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 7 ways as a sum of consecutive naturals, for example, 1295271 + ... + 1295672.

It is an arithmetic number, because the mean of its divisors is an integer number (88092096).

Almost surely, 2^520779543 is an apocalyptic number.

520779543 is a deficient number, since it is larger than the sum of its proper divisors (183957225).

520779543 is a wasteful number, since it uses less digits than its factorization.

520779543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591013.

The product of its (nonzero) digits is 264600, while the sum is 42.

The square root of 520779543 is about 22820.5947117949. The cubic root of 520779543 is about 804.5467880867.

The spelling of 520779543 in words is "five hundred twenty million, seven hundred seventy-nine thousand, five hundred forty-three".