531527993 has 2 divisors, whose sum is σ = 531527994. Its totient is φ = 531527992.

The previous prime is 531527981. The next prime is 531528013. The reversal of 531527993 is 399725135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528402169 + 3125824 = 22987^2 + 1768^2 .

It is a cyclic number.

It is not a de Polignac number, because 531527993 - 2¹⁰ = 531526969 is a prime.

It is not a weakly prime, because it can be changed into another prime (531527963) 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, 265763996 + 265763997.

It is an arithmetic number, because the mean of its divisors is an integer number (265763997).

Almost surely, 2^531527993 is an apocalyptic number.

It is an amenable number.

531527993 is a deficient number, since it is larger than the sum of its proper divisors (1).

531527993 is an equidigital number, since it uses as much as digits as its factorization.

531527993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 255150, while the sum is 44.

The square root of 531527993 is about 23054.8908694012. The cubic root of 531527993 is about 810.0441946115.

The spelling of 531527993 in words is "five hundred thirty-one million, five hundred twenty-seven thousand, nine hundred ninety-three".