52215213440 has 96 divisors (see below), whose sum is σ = 135167972400. Its totient is φ = 19279423488.

The previous prime is 52215213377. The next prime is 52215213461. The reversal of 52215213440 is 4431251225.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 133220 + ... + 349539.

Almost surely, 2^52215213440 is an apocalyptic number.

It is an amenable number.

52215213440 is an abundant number, since it is smaller than the sum of its proper divisors (82952758960).

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

52215213440 is a wasteful number, since it uses less digits than its factorization.

52215213440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482804 (or 482779 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 52215213440 its reverse (4431251225), we get a palindrome (56646464665).

The spelling of 52215213440 in words is "fifty-two billion, two hundred fifteen million, two hundred thirteen thousand, four hundred forty".