531440452 has 12 divisors (see below), whose sum is σ = 930188560. Its totient is φ = 265672296.

The previous prime is 531440363. The next prime is 531440453. The reversal of 531440452 is 254044135.

It is a self number, because there is not a number n which added to its sum of digits gives 531440452.

It is not an unprimeable number, because it can be changed into a prime (531440453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27199 + ... + 42457.

Almost surely, 2^531440452 is an apocalyptic number.

It is an amenable number.

531440452 is a deficient number, since it is larger than the sum of its proper divisors (398748108).

531440452 is a wasteful number, since it uses less digits than its factorization.

531440452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23970 (or 23968 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 531440452 is about 23052.9922569718. The cubic root of 531440452 is about 809.9997215871. Note that the first 3 decimals are identical.

Adding to 531440452 its reverse (254044135), we get a palindrome (785484587).

The spelling of 531440452 in words is "five hundred thirty-one million, four hundred forty thousand, four hundred fifty-two".