52345004520 has 128 divisors (see below), whose sum is σ = 158733469440. Its totient is φ = 13808517120.

The previous prime is 52345004519. The next prime is 52345004527. The reversal of 52345004520 is 2540054325.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (52345004527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4185717 + ... + 4198203.

It is an arithmetic number, because the mean of its divisors is an integer number (1240105230).

Almost surely, 2^52345004520 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 52345004520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79366734720).

52345004520 is an abundant number, since it is smaller than the sum of its proper divisors (106388464920).

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

52345004520 is a wasteful number, since it uses less digits than its factorization.

52345004520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12875 (or 12871 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 52345004520 its reverse (2540054325), we get a palindrome (54885058845).

The spelling of 52345004520 in words is "fifty-two billion, three hundred forty-five million, four thousand, five hundred twenty".