521324310052 has 96 divisors (see below), whose sum is σ = 1149490614272. Its totient is φ = 201349846656.

The previous prime is 521324310047. The next prime is 521324310053. The reversal of 521324310052 is 250013423125.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 521324310052.

It is not an unprimeable number, because it can be changed into a prime (521324310053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41424553 + ... + 41437135.

Almost surely, 2^521324310052 is an apocalyptic number.

521324310052 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521324310052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574745307136).

521324310052 is an abundant number, since it is smaller than the sum of its proper divisors (628166304220).

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

521324310052 is a wasteful number, since it uses less digits than its factorization.

521324310052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15297 (or 15295 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 521324310052 its reverse (250013423125), we get a palindrome (771337733177).

The spelling of 521324310052 in words is "five hundred twenty-one billion, three hundred twenty-four million, three hundred ten thousand, fifty-two".