65053309 has 4 divisors (see below), whose sum is σ = 65629116. Its totient is φ = 64477504.

The previous prime is 65053291. The next prime is 65053333. The reversal of 65053309 is 90335056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2295225 + 62758084 = 1515^2 + 7922^2 .

It is a cyclic number.

It is not a de Polignac number, because 65053309 - 2⁵ = 65053277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65053349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287734 + ... + 287959.

It is an arithmetic number, because the mean of its divisors is an integer number (16407279).

Almost surely, 2^65053309 is an apocalyptic number.

It is an amenable number.

65053309 is a deficient number, since it is larger than the sum of its proper divisors (575807).

65053309 is a wasteful number, since it uses less digits than its factorization.

65053309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575806.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 65053309 is about 8065.5631545479. The cubic root of 65053309 is about 402.1824642178.

The spelling of 65053309 in words is "sixty-five million, fifty-three thousand, three hundred nine".