531044993 has 2 divisors, whose sum is σ = 531044994. Its totient is φ = 531044992.

The previous prime is 531044989. The next prime is 531045007. The reversal of 531044993 is 399440135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 480179569 + 50865424 = 21913^2 + 7132^2 .

It is a cyclic number.

It is not a de Polignac number, because 531044993 - 2² = 531044989 is a prime.

It is not a weakly prime, because it can be changed into another prime (531044903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265522496 + 265522497.

It is an arithmetic number, because the mean of its divisors is an integer number (265522497).

Almost surely, 2^531044993 is an apocalyptic number.

It is an amenable number.

531044993 is a deficient number, since it is larger than the sum of its proper divisors (1).

531044993 is an equidigital number, since it uses as much as digits as its factorization.

531044993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 531044993 is about 23044.4134878716. The cubic root of 531044993 is about 809.7987576065.

The spelling of 531044993 in words is "five hundred thirty-one million, forty-four thousand, nine hundred ninety-three".