6551565 has 16 divisors (see below), whose sum is σ = 10706688. Its totient is φ = 3419456.

The previous prime is 6551563. The next prime is 6551569. The reversal of 6551565 is 5651556.

6551565 is digitally balanced in base 3, 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 6551565 - 2¹ = 6551563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3942 + ... + 5351.

It is an arithmetic number, because the mean of its divisors is an integer number (669168).

Almost surely, 2^6551565 is an apocalyptic number.

It is an amenable number.

6551565 is a deficient number, since it is larger than the sum of its proper divisors (4155123).

6551565 is a wasteful number, since it uses less digits than its factorization.

6551565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9348.

The product of its digits is 22500, while the sum is 33.

The square root of 6551565 is about 2559.6025082032. The cubic root of 6551565 is about 187.1177635265.

Subtracting from 6551565 its reverse (5651556), we obtain a palindrome (900009).

The spelling of 6551565 in words is "six million, five hundred fifty-one thousand, five hundred sixty-five".