6531265 has 16 divisors (see below), whose sum is σ = 8542800. Its totient is φ = 4764672.

The previous prime is 6531253. The next prime is 6531289. The reversal of 6531265 is 5621356.

It can be written as a sum of positive squares in 8 ways, for example, as 2563201 + 3968064 = 1601^2 + 1992^2 .

It is a cyclic number.

It is not a de Polignac number, because 6531265 - 2⁵ = 6531233 is a prime.

It is a congruent number.

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, 5221 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (533925).

Almost surely, 2^6531265 is an apocalyptic number.

6531265 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6531265 is a deficient number, since it is larger than the sum of its proper divisors (2011535).

6531265 is a wasteful number, since it uses less digits than its factorization.

6531265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236.

The product of its digits is 5400, while the sum is 28.

The square root of 6531265 is about 2555.6339722269. The cubic root of 6531265 is about 186.9243023423.

Subtracting from 6531265 its reverse (5621356), we obtain a palindrome (909909).

The spelling of 6531265 in words is "six million, five hundred thirty-one thousand, two hundred sixty-five".