52453867520 has 64 divisors (see below), whose sum is σ = 125887754340. Its totient is φ = 20981481472.

The previous prime is 52453867507. The next prime is 52453867603. The reversal of 52453867520 is 2576835425.

It can be written as a sum of positive squares in 2 ways, for example, as 46297268224 + 6156599296 = 215168^2 + 78464^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3764 + ... + 323916.

Almost surely, 2^52453867520 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 52453867520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62943877170).

52453867520 is an abundant number, since it is smaller than the sum of its proper divisors (73433886820).

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

52453867520 is an frugal number, since it uses more digits than its factorization.

52453867520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320188 (or 320160 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 47.

The spelling of 52453867520 in words is "fifty-two billion, four hundred fifty-three million, eight hundred sixty-seven thousand, five hundred twenty".