531216452 has 12 divisors (see below), whose sum is σ = 1001138796. Its totient is φ = 245176800.

The previous prime is 531216431. The next prime is 531216463. The reversal of 531216452 is 254612135.

It can be written as a sum of positive squares in 2 ways, for example, as 336502336 + 194714116 = 18344^2 + 13954^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5107799 + ... + 5107902.

It is an arithmetic number, because the mean of its divisors is an integer number (83428233).

Almost surely, 2^531216452 is an apocalyptic number.

531216452 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

531216452 is a deficient number, since it is larger than the sum of its proper divisors (469922344).

531216452 is a wasteful number, since it uses less digits than its factorization.

531216452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10215718 (or 10215716 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 531216452 is about 23048.1333734426. The cubic root of 531216452 is about 809.8859017257.

Adding to 531216452 its reverse (254612135), we get a palindrome (785828587).

The spelling of 531216452 in words is "five hundred thirty-one million, two hundred sixteen thousand, four hundred fifty-two".