531563717 has 2 divisors, whose sum is σ = 531563718. Its totient is φ = 531563716.

The previous prime is 531563713. The next prime is 531563771. The reversal of 531563717 is 717365135.

Together with next prime (531563771) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377952481 + 153611236 = 19441^2 + 12394^2 .

It is a cyclic number.

It is not a de Polignac number, because 531563717 - 2² = 531563713 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531563713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265781858 + 265781859.

It is an arithmetic number, because the mean of its divisors is an integer number (265781859).

Almost surely, 2^531563717 is an apocalyptic number.

It is an amenable number.

531563717 is a deficient number, since it is larger than the sum of its proper divisors (1).

531563717 is an equidigital number, since it uses as much as digits as its factorization.

531563717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66150, while the sum is 38.

The square root of 531563717 is about 23055.6656160693. The cubic root of 531563717 is about 810.0623418968.

The spelling of 531563717 in words is "five hundred thirty-one million, five hundred sixty-three thousand, seven hundred seventeen".