515550065 has 8 divisors (see below), whose sum is σ = 621900288. Its totient is φ = 410279920.

The previous prime is 515550029. The next prime is 515550103. The reversal of 515550065 is 560055515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 515550065 - 2⁶ = 515550001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268967 + ... + 270876.

It is an arithmetic number, because the mean of its divisors is an integer number (77737536).

Almost surely, 2^515550065 is an apocalyptic number.

It is an amenable number.

515550065 is a deficient number, since it is larger than the sum of its proper divisors (106350223).

515550065 is a wasteful number, since it uses less digits than its factorization.

515550065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540039.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 515550065 is about 22705.7275813835. The cubic root of 515550065 is about 801.8447351083.

The spelling of 515550065 in words is "five hundred fifteen million, five hundred fifty thousand, sixty-five".