520000517172 has 72 divisors (see below), whose sum is σ = 1301667867360. Its totient is φ = 161522086400.

The previous prime is 520000517167. The next prime is 520000517209. The reversal of 520000517172 is 271715000025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392022 + ... + 1092557.

It is an arithmetic number, because the mean of its divisors is an integer number (18078720380).

Almost surely, 2^520000517172 is an apocalyptic number.

It is an amenable number.

520000517172 is an abundant number, since it is smaller than the sum of its proper divisors (781667350188).

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

520000517172 is a wasteful number, since it uses less digits than its factorization.

520000517172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484721 (or 1484702 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 30.

Adding to 520000517172 its reverse (271715000025), we get a palindrome (791715517197).

The spelling of 520000517172 in words is "five hundred twenty billion, five hundred seventeen thousand, one hundred seventy-two".