531222252 has 24 divisors (see below), whose sum is σ = 1352202432. Its totient is φ = 160976400.

The previous prime is 531222187. The next prime is 531222257. The reversal of 531222252 is 252222135.

It is not an unprimeable number, because it can be changed into a prime (531222257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2012074 + ... + 2012337.

It is an arithmetic number, because the mean of its divisors is an integer number (56341768).

Almost surely, 2^531222252 is an apocalyptic number.

It is an amenable number.

531222252 is an abundant number, since it is smaller than the sum of its proper divisors (820980180).

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

531222252 is a wasteful number, since it uses less digits than its factorization.

531222252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024429 (or 4024427 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 531222252 is about 23048.2591967376. The cubic root of 531222252 is about 809.8888492506. Note that the first 4 decimals are identical.

Adding to 531222252 its reverse (252222135), we get a palindrome (783444387).

The spelling of 531222252 in words is "five hundred thirty-one million, two hundred twenty-two thousand, two hundred fifty-two".