531004424 has 8 divisors (see below), whose sum is σ = 995633310. Its totient is φ = 265502208.

The previous prime is 531004423. The next prime is 531004447. The reversal of 531004424 is 424400135.

It can be written as a sum of positive squares in only one way, i.e., 503104900 + 27899524 = 22430^2 + 5282^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 531004424.

It is not an unprimeable number, because it can be changed into a prime (531004421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33187769 + ... + 33187784.

Almost surely, 2^531004424 is an apocalyptic number.

It is an amenable number.

531004424 is a deficient number, since it is larger than the sum of its proper divisors (464628886).

531004424 is a wasteful number, since it uses less digits than its factorization.

531004424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66375559 (or 66375555 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 531004424 is about 23043.5332360296. The cubic root of 531004424 is about 809.7781356486.

Adding to 531004424 its reverse (424400135), we get a palindrome (955404559).

The spelling of 531004424 in words is "five hundred thirty-one million, four thousand, four hundred twenty-four".