520500340221 has 8 divisors (see below), whose sum is σ = 694006151040. Its totient is φ = 346997378112.

The previous prime is 520500340177. The next prime is 520500340259. The reversal of 520500340221 is 122043005025.

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

It is not a de Polignac number, because 520500340221 - 2⁷ = 520500340093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520500340191 and 520500340200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520500360221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241381 + ... + 1048458.

It is an arithmetic number, because the mean of its divisors is an integer number (86750768880).

Almost surely, 2^520500340221 is an apocalyptic number.

It is an amenable number.

520500340221 is a deficient number, since it is larger than the sum of its proper divisors (173505810819).

520500340221 is a wasteful number, since it uses less digits than its factorization.

520500340221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424355.

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

Adding to 520500340221 its reverse (122043005025), we get a palindrome (642543345246).

The spelling of 520500340221 in words is "five hundred twenty billion, five hundred million, three hundred forty thousand, two hundred twenty-one".