65282509 has 4 divisors (see below), whose sum is σ = 67533660. Its totient is φ = 63031360.

The previous prime is 65282507. The next prime is 65282527. The reversal of 65282509 is 90528256.

It is a happy number.

65282509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31024900 + 34257609 = 5570^2 + 5853^2 .

It is a cyclic number.

It is not a de Polignac number, because 65282509 - 2¹ = 65282507 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 (65282507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1125532 + ... + 1125589.

It is an arithmetic number, because the mean of its divisors is an integer number (16883415).

Almost surely, 2^65282509 is an apocalyptic number.

It is an amenable number.

65282509 is a deficient number, since it is larger than the sum of its proper divisors (2251151).

65282509 is a wasteful number, since it uses less digits than its factorization.

65282509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251150.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 65282509 is about 8079.7592167094. The cubic root of 65282509 is about 402.6542422881.

The spelling of 65282509 in words is "sixty-five million, two hundred eighty-two thousand, five hundred nine".