520203543 has 8 divisors (see below), whose sum is σ = 693772800. Its totient is φ = 346718328.

The previous prime is 520203521. The next prime is 520203559. The reversal of 520203543 is 345302025.

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

It is not a de Polignac number, because 520203543 - 2⁸ = 520203287 is a prime.

It is a super-2 number, since 2×520203543² = 541223452299505698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520203583) 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, 4773 + ... + 32606.

It is an arithmetic number, because the mean of its divisors is an integer number (86721600).

Almost surely, 2^520203543 is an apocalyptic number.

520203543 is a deficient number, since it is larger than the sum of its proper divisors (173569257).

520203543 is a wasteful number, since it uses less digits than its factorization.

520203543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42021.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 520203543 is about 22807.9710408445. The cubic root of 520203543 is about 804.2500599006.

Adding to 520203543 its reverse (345302025), we get a palindrome (865505568).

The spelling of 520203543 in words is "five hundred twenty million, two hundred three thousand, five hundred forty-three".