52540020140 has 96 divisors (see below), whose sum is σ = 117635172480. Its totient is φ = 19643019264.

The previous prime is 52540020139. The next prime is 52540020193. The reversal of 52540020140 is 4102004525.

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, 36308897 + ... + 36310343.

It is an arithmetic number, because the mean of its divisors is an integer number (1225366380).

Almost surely, 2^52540020140 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 52540020140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58817586240).

52540020140 is an abundant number, since it is smaller than the sum of its proper divisors (65095152340).

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

52540020140 is a wasteful number, since it uses less digits than its factorization.

52540020140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139 (or 2137 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 52540020140 its reverse (4102004525), we get a palindrome (56642024665).

The spelling of 52540020140 in words is "fifty-two billion, five hundred forty million, twenty thousand, one hundred forty".