65038515 has 16 divisors (see below), whose sum is σ = 110183328. Its totient is φ = 32646656.

The previous prime is 65038513. The next prime is 65038531. The reversal of 65038515 is 51583056.

65038515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 65038515 - 2¹ = 65038513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65038513) 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 15 ways as a sum of consecutive naturals, for example, 127272 + ... + 127781.

It is an arithmetic number, because the mean of its divisors is an integer number (6886458).

Almost surely, 2^65038515 is an apocalyptic number.

65038515 is a deficient number, since it is larger than the sum of its proper divisors (45144813).

65038515 is a wasteful number, since it uses less digits than its factorization.

65038515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255078.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 65038515 is about 8064.6459934705. The cubic root of 65038515 is about 402.1519746672.

The spelling of 65038515 in words is "sixty-five million, thirty-eight thousand, five hundred fifteen".