531224 has 8 divisors (see below), whose sum is σ = 996060. Its totient is φ = 265608.

The previous prime is 531203. The next prime is 531229. The reversal of 531224 is 422135.

531224 is nontrivially palindromic in base 16.

It is a tau number, because it is divible by the number of its divisors (8).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531229) by changing a digit.

531224 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33194 + ... + 33209.

2⁵³¹²²⁴ is an apocalyptic number.

It is an amenable number.

531224 is a deficient number, since it is larger than the sum of its proper divisors (464836).

531224 is a wasteful number, since it uses less digits than its factorization.

531224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66409 (or 66405 counting only the distinct ones).

The product of its digits is 240, while the sum is 17.

The square root of 531224 is about 728.8511507846. The cubic root of 531224 is about 80.9889737569.

Adding to 531224 its reverse (422135), we get a palindrome (953359).

The spelling of 531224 in words is "five hundred thirty-one thousand, two hundred twenty-four".