520352543 has 4 divisors (see below), whose sum is σ = 520757520. Its totient is φ = 519947568.

The previous prime is 520352537. The next prime is 520352587. The reversal of 520352543 is 345253025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520352543 - 2¹⁸ = 520090399 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520352243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200555 + ... + 203132.

It is an arithmetic number, because the mean of its divisors is an integer number (130189380).

Almost surely, 2^520352543 is an apocalyptic number.

520352543 is a deficient number, since it is larger than the sum of its proper divisors (404977).

520352543 is a wasteful number, since it uses less digits than its factorization.

520352543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404976.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 520352543 is about 22811.2372088846. The cubic root of 520352543 is about 804.3268387059.

The spelling of 520352543 in words is "five hundred twenty million, three hundred fifty-two thousand, five hundred forty-three".