531982499 has 2 divisors, whose sum is σ = 531982500. Its totient is φ = 531982498.

The previous prime is 531982489. The next prime is 531982511. The reversal of 531982499 is 994289135.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531982499 - 2²⁴ = 515205283 is a prime.

It is equal to p_27949298 and since 531982499 and 27949298 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (531982489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265991249 + 265991250.

It is an arithmetic number, because the mean of its divisors is an integer number (265991250).

Almost surely, 2^531982499 is an apocalyptic number.

531982499 is a deficient number, since it is larger than the sum of its proper divisors (1).

531982499 is an equidigital number, since it uses as much as digits as its factorization.

531982499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 50.

The square root of 531982499 is about 23064.7458039320. The cubic root of 531982499 is about 810.2750166074.

The spelling of 531982499 in words is "five hundred thirty-one million, nine hundred eighty-two thousand, four hundred ninety-nine".