52505005240 has 64 divisors (see below), whose sum is σ = 125251920000. Its totient is φ = 19740284928.

The previous prime is 52505005229. The next prime is 52505005247. The reversal of 52505005240 is 4250050525.

It is a junction number, because it is equal to n+sod(n) for n = 52505005199 and 52505005208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52505005247) 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 15 ways as a sum of consecutive naturals, for example, 463761 + ... + 565759.

It is an arithmetic number, because the mean of its divisors is an integer number (1957061250).

Almost surely, 2^52505005240 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 52505005240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62625960000).

52505005240 is an abundant number, since it is smaller than the sum of its proper divisors (72746914760).

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

52505005240 is a wasteful number, since it uses less digits than its factorization.

52505005240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102784 (or 102780 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

Adding to 52505005240 its reverse (4250050525), we get a palindrome (56755055765).

The spelling of 52505005240 in words is "fifty-two billion, five hundred five million, five thousand, two hundred forty".