6531261 has 16 divisors (see below), whose sum is σ = 9704448. Its totient is φ = 3873200.

The previous prime is 6531253. The next prime is 6531289. The reversal of 6531261 is 1621356.

It is a cyclic number.

It is not a de Polignac number, because 6531261 - 2³ = 6531253 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6531211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 555 + ... + 3656.

It is an arithmetic number, because the mean of its divisors is an integer number (606528).

Almost surely, 2^6531261 is an apocalyptic number.

It is an amenable number.

6531261 is a deficient number, since it is larger than the sum of its proper divisors (3173187).

6531261 is a wasteful number, since it uses less digits than its factorization.

6531261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272.

The product of its digits is 1080, while the sum is 24.

The square root of 6531261 is about 2555.6331896421. The cubic root of 6531261 is about 186.9242641824.

The spelling of 6531261 in words is "six million, five hundred thirty-one thousand, two hundred sixty-one".