531153109 has 2 divisors, whose sum is σ = 531153110. Its totient is φ = 531153108.

The previous prime is 531153023. The next prime is 531153127. The reversal of 531153109 is 901351135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 498628900 + 32524209 = 22330^2 + 5703^2 .

It is a cyclic number.

It is not a de Polignac number, because 531153109 - 2⁹ = 531152597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531153179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265576554 + 265576555.

It is an arithmetic number, because the mean of its divisors is an integer number (265576555).

Almost surely, 2^531153109 is an apocalyptic number.

It is an amenable number.

531153109 is a deficient number, since it is larger than the sum of its proper divisors (1).

531153109 is an equidigital number, since it uses as much as digits as its factorization.

531153109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2025, while the sum is 28.

The square root of 531153109 is about 23046.7591864887. The cubic root of 531153109 is about 809.8537097999.

The spelling of 531153109 in words is "five hundred thirty-one million, one hundred fifty-three thousand, one hundred nine".