531604517 has 2 divisors, whose sum is σ = 531604518. Its totient is φ = 531604516.

The previous prime is 531604499. The next prime is 531604519. The reversal of 531604517 is 715406135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 432681601 + 98922916 = 20801^2 + 9946^2 .

It is a cyclic number.

It is not a de Polignac number, because 531604517 - 2¹⁴ = 531588133 is a prime.

Together with 531604519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531604519) 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, 265802258 + 265802259.

It is an arithmetic number, because the mean of its divisors is an integer number (265802259).

Almost surely, 2^531604517 is an apocalyptic number.

It is an amenable number.

531604517 is a deficient number, since it is larger than the sum of its proper divisors (1).

531604517 is an equidigital number, since it uses as much as digits as its factorization.

531604517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 531604517 is about 23056.5504141448. The cubic root of 531604517 is about 810.0830667237.

The spelling of 531604517 in words is "five hundred thirty-one million, six hundred four thousand, five hundred seventeen".