520331543 has 8 divisors (see below), whose sum is σ = 538546080. Its totient is φ = 502135200.

The previous prime is 520331503. The next prime is 520331551. The reversal of 520331543 is 345133025.

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 520331543 - 2⁶ = 520331479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520331503) 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, 81518 + ... + 87668.

It is an arithmetic number, because the mean of its divisors is an integer number (67318260).

Almost surely, 2^520331543 is an apocalyptic number.

520331543 is a deficient number, since it is larger than the sum of its proper divisors (18214537).

520331543 is a wasteful number, since it uses less digits than its factorization.

520331543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9097.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 520331543 is about 22810.7769047878. The cubic root of 520331543 is about 804.3160184194.

Adding to 520331543 its reverse (345133025), we get a palindrome (865464568).

The spelling of 520331543 in words is "five hundred twenty million, three hundred thirty-one thousand, five hundred forty-three".