616215252 has 48 divisors (see below), whose sum is σ = 1524180672. Its totient is φ = 193098240.

The previous prime is 616215221. The next prime is 616215367. The reversal of 616215252 is 252512616.

616215252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311338 + ... + 313310.

It is an arithmetic number, because the mean of its divisors is an integer number (31753764).

Almost surely, 2^616215252 is an apocalyptic number.

It is an amenable number.

616215252 is an abundant number, since it is smaller than the sum of its proper divisors (907965420).

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

616215252 is a wasteful number, since it uses less digits than its factorization.

616215252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528 (or 3526 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 616215252 is about 24823.6832883438. The cubic root of 616215252 is about 850.9632687406.

Adding to 616215252 its reverse (252512616), we get a palindrome (868727868).

The spelling of 616215252 in words is "six hundred sixteen million, two hundred fifteen thousand, two hundred fifty-two".