551515065 has 16 divisors (see below), whose sum is σ = 884426688. Its totient is φ = 293473856.

The previous prime is 551515049. The next prime is 551515103. The reversal of 551515065 is 560515155.

551515065 is digitally balanced in base 6, 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 551515065 - 2⁴ = 551515049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34854 + ... + 48143.

It is an arithmetic number, because the mean of its divisors is an integer number (55276668).

Almost surely, 2^551515065 is an apocalyptic number.

It is an amenable number.

551515065 is a deficient number, since it is larger than the sum of its proper divisors (332911623).

551515065 is a wasteful number, since it uses less digits than its factorization.

551515065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83448.

The product of its (nonzero) digits is 18750, while the sum is 33.

The square root of 551515065 is about 23484.3578792353. The cubic root of 551515065 is about 820.0728990316.

The spelling of 551515065 in words is "five hundred fifty-one million, five hundred fifteen thousand, sixty-five".