531350647 has 2 divisors, whose sum is σ = 531350648. Its totient is φ = 531350646.

The previous prime is 531350579. The next prime is 531350681. The reversal of 531350647 is 746053135.

It is an a-pointer prime, because the next prime (531350681) can be obtained adding 531350647 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531350647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531350947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265675323 + 265675324.

It is an arithmetic number, because the mean of its divisors is an integer number (265675324).

Almost surely, 2^531350647 is an apocalyptic number.

531350647 is a deficient number, since it is larger than the sum of its proper divisors (1).

531350647 is an equidigital number, since it uses as much as digits as its factorization.

531350647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 531350647 is about 23051.0443798106. The cubic root of 531350647 is about 809.9540933186.

The spelling of 531350647 in words is "five hundred thirty-one million, three hundred fifty thousand, six hundred forty-seven".