515016065 has 4 divisors (see below), whose sum is σ = 618019284. Its totient is φ = 412012848.

The previous prime is 515016053. The next prime is 515016091. The reversal of 515016065 is 560610515.

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 56670784 + 458345281 = 7528^2 + 21409^2 .

It is a cyclic number.

It is not a de Polignac number, because 515016065 - 2⁶ = 515016001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 51501602 + ... + 51501611.

It is an arithmetic number, because the mean of its divisors is an integer number (154504821).

Almost surely, 2^515016065 is an apocalyptic number.

It is an amenable number.

515016065 is a deficient number, since it is larger than the sum of its proper divisors (103003219).

515016065 is a wasteful number, since it uses less digits than its factorization.

515016065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103003218.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 515016065 is about 22693.9653873007. The cubic root of 515016065 is about 801.5677927129.

The spelling of 515016065 in words is "five hundred fifteen million, sixteen thousand, sixty-five".