520143522 has 8 divisors (see below), whose sum is σ = 1040287056. Its totient is φ = 173381172.

The previous prime is 520143497. The next prime is 520143527. The reversal of 520143522 is 225341025.

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

520143522 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 520143492 and 520143501.

It is not an unprimeable number, because it can be changed into a prime (520143527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43345288 + ... + 43345299.

It is an arithmetic number, because the mean of its divisors is an integer number (130035882).

Almost surely, 2^520143522 is an apocalyptic number.

520143522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520143522 is a wasteful number, since it uses less digits than its factorization.

520143522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86690592.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 520143522 is about 22806.6552128978. The cubic root of 520143522 is about 804.2191272973.

Adding to 520143522 its reverse (225341025), we get a palindrome (745484547).

The spelling of 520143522 in words is "five hundred twenty million, one hundred forty-three thousand, five hundred twenty-two".