52520144420 has 96 divisors (see below), whose sum is σ = 121960194048. Its totient is φ = 18896689152.

The previous prime is 52520144389. The next prime is 52520144429. The reversal of 52520144420 is 2444102525.

It is not an unprimeable number, because it can be changed into a prime (52520144429) 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 31 ways as a sum of consecutive naturals, for example, 13237277 + ... + 13241243.

It is an arithmetic number, because the mean of its divisors is an integer number (1270418688).

Almost surely, 2^52520144420 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 52520144420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60980097024).

52520144420 is an abundant number, since it is smaller than the sum of its proper divisors (69440049628).

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

52520144420 is a wasteful number, since it uses less digits than its factorization.

52520144420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709 (or 5707 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 52520144420 its reverse (2444102525), we get a palindrome (54964246945).

The spelling of 52520144420 in words is "fifty-two billion, five hundred twenty million, one hundred forty-four thousand, four hundred twenty".