252323121534 has 48 divisors (see below), whose sum is σ = 555477298320. Its totient is φ = 76353552000.

The previous prime is 252323121511. The next prime is 252323121539. The reversal of 252323121534 is 435121323252.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 252323121495 and 252323121504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252323121539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269634 + ... + 759834.

It is an arithmetic number, because the mean of its divisors is an integer number (11572443715).

Almost surely, 2^252323121534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252323121534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277738649160).

252323121534 is an abundant number, since it is smaller than the sum of its proper divisors (303154176786).

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

252323121534 is a wasteful number, since it uses less digits than its factorization.

252323121534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490937 (or 490926 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

Adding to 252323121534 its reverse (435121323252), we get a palindrome (687444444786).

The spelling of 252323121534 in words is "two hundred fifty-two billion, three hundred twenty-three million, one hundred twenty-one thousand, five hundred thirty-four".