535520509 has 2 divisors, whose sum is σ = 535520510. Its totient is φ = 535520508.

The previous prime is 535520497. The next prime is 535520551. The reversal of 535520509 is 905025535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511754884 + 23765625 = 22622^2 + 4875^2 .

It is a cyclic number.

It is not a de Polignac number, because 535520509 - 2¹⁹ = 534996221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (535520809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267760254 + 267760255.

It is an arithmetic number, because the mean of its divisors is an integer number (267760255).

Almost surely, 2^535520509 is an apocalyptic number.

It is an amenable number.

535520509 is a deficient number, since it is larger than the sum of its proper divisors (1).

535520509 is an equidigital number, since it uses as much as digits as its factorization.

535520509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33750, while the sum is 34.

The square root of 535520509 is about 23141.3160602417. The cubic root of 535520509 is about 812.0673244712.

The spelling of 535520509 in words is "five hundred thirty-five million, five hundred twenty thousand, five hundred nine".