531665063 has 2 divisors, whose sum is σ = 531665064. Its totient is φ = 531665062.

The previous prime is 531665047. The next prime is 531665077. The reversal of 531665063 is 360566135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531665063 - 2⁴ = 531665047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531665083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265832531 + 265832532.

It is an arithmetic number, because the mean of its divisors is an integer number (265832532).

Almost surely, 2^531665063 is an apocalyptic number.

531665063 is a deficient number, since it is larger than the sum of its proper divisors (1).

531665063 is an equidigital number, since it uses as much as digits as its factorization.

531665063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 531665063 is about 23057.8633658889. The cubic root of 531665063 is about 810.1138198029.

The spelling of 531665063 in words is "five hundred thirty-one million, six hundred sixty-five thousand, sixty-three".