6531197 has 4 divisors (see below), whose sum is σ = 6539676. Its totient is φ = 6522720.

The previous prime is 6531191. The next prime is 6531199. The reversal of 6531197 is 7911356.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5924356 + 606841 = 2434^2 + 779^2 .

It is a cyclic number.

It is not a de Polignac number, because 6531197 - 2⁴ = 6531181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6531191) 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 3 ways as a sum of consecutive naturals, for example, 2954 + ... + 4667.

It is an arithmetic number, because the mean of its divisors is an integer number (1634919).

Almost surely, 2^6531197 is an apocalyptic number.

It is an amenable number.

6531197 is a deficient number, since it is larger than the sum of its proper divisors (8479).

6531197 is an equidigital number, since it uses as much as digits as its factorization.

6531197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8478.

The product of its digits is 5670, while the sum is 32.

The square root of 6531197 is about 2555.6206682526. The cubic root of 6531197 is about 186.9236536218.

The spelling of 6531197 in words is "six million, five hundred thirty-one thousand, one hundred ninety-seven".