531065089 has 2 divisors, whose sum is σ = 531065090. Its totient is φ = 531065088.

The previous prime is 531065063. The next prime is 531065099. The reversal of 531065089 is 980560135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 511528689 + 19536400 = 22617^2 + 4420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531065089 is a prime.

It is not a weakly prime, because it can be changed into another prime (531065099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265532544 + 265532545.

It is an arithmetic number, because the mean of its divisors is an integer number (265532545).

Almost surely, 2^531065089 is an apocalyptic number.

It is an amenable number.

531065089 is a deficient number, since it is larger than the sum of its proper divisors (1).

531065089 is an equidigital number, since it uses as much as digits as its factorization.

531065089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 531065089 is about 23044.8495113333. The cubic root of 531065089 is about 809.8089723784.

The spelling of 531065089 in words is "five hundred thirty-one million, sixty-five thousand, eighty-nine".