52521541520 has 160 divisors (see below), whose sum is σ = 141499872000. Its totient is φ = 17757831168.

The previous prime is 52521541517. The next prime is 52521541571. The reversal of 52521541520 is 2514512525.

It is a happy 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 31 ways as a sum of consecutive naturals, for example, 22376987 + ... + 22379333.

It is an arithmetic number, because the mean of its divisors is an integer number (884374200).

Almost surely, 2^52521541520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52521541520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70749936000).

52521541520 is an abundant number, since it is smaller than the sum of its proper divisors (88978330480).

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

52521541520 is a wasteful number, since it uses less digits than its factorization.

52521541520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905 (or 2899 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 52521541520 in words is "fifty-two billion, five hundred twenty-one million, five hundred forty-one thousand, five hundred twenty".