509236065 has 60 divisors (see below), whose sum is σ = 986243412. Its totient is φ = 249894720.

The previous prime is 509236019. The next prime is 509236073. The reversal of 509236065 is 560632905.

It can be written as a sum of positive squares in 2 ways, for example, as 125350416 + 383885649 = 11196^2 + 19593^2 .

It is not a de Polignac number, because 509236065 - 2¹² = 509231969 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1637260 + ... + 1637570.

Almost surely, 2^509236065 is an apocalyptic number.

It is an amenable number.

509236065 is a deficient number, since it is larger than the sum of its proper divisors (477007347).

509236065 is an equidigital number, since it uses as much as digits as its factorization.

509236065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 509236065 is about 22566.2594374876. The cubic root of 509236065 is about 798.5578523457.

The spelling of 509236065 in words is "five hundred nine million, two hundred thirty-six thousand, sixty-five".