520531523201 has 8 divisors (see below), whose sum is σ = 539865167400. Its totient is φ = 501290164480.

The previous prime is 520531523179. The next prime is 520531523209. The reversal of 520531523201 is 102325135025.

It can be written as a sum of positive squares in 4 ways, for example, as 149892865600 + 370638657601 = 387160^2 + 608801^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520531523201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520531523209) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23059880 + ... + 23082441.

It is an arithmetic number, because the mean of its divisors is an integer number (67483145925).

Almost surely, 2^520531523201 is an apocalyptic number.

It is an amenable number.

520531523201 is a deficient number, since it is larger than the sum of its proper divisors (19333644199).

520531523201 is a wasteful number, since it uses less digits than its factorization.

520531523201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46142739.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 520531523201 its reverse (102325135025), we get a palindrome (622856658226).

The spelling of 520531523201 in words is "five hundred twenty billion, five hundred thirty-one million, five hundred twenty-three thousand, two hundred one".