65160509 has 2 divisors, whose sum is σ = 65160510. Its totient is φ = 65160508.

The previous prime is 65160503. The next prime is 65160517. The reversal of 65160509 is 90506156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54434884 + 10725625 = 7378^2 + 3275^2 .

It is a cyclic number.

It is not a de Polignac number, because 65160509 - 2⁴ = 65160493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65160503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32580254 + 32580255.

It is an arithmetic number, because the mean of its divisors is an integer number (32580255).

Almost surely, 2^65160509 is an apocalyptic number.

It is an amenable number.

65160509 is a deficient number, since it is larger than the sum of its proper divisors (1).

65160509 is an equidigital number, since it uses as much as digits as its factorization.

65160509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 65160509 is about 8072.2059562427. The cubic root of 65160509 is about 402.4032590309.

It can be divided in two parts, 65160 and 509, that multiplied together give a triangular number (33166440 = T₈₁₄₄).

The spelling of 65160509 in words is "sixty-five million, one hundred sixty thousand, five hundred nine".