6531449 has 4 divisors (see below), whose sum is σ = 6670464. Its totient is φ = 6392436.

The previous prime is 6531433. The next prime is 6531457. The reversal of 6531449 is 9441356.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6531449 - 2⁴ = 6531433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6531419) 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, 69437 + ... + 69530.

It is an arithmetic number, because the mean of its divisors is an integer number (1667616).

Almost surely, 2^6531449 is an apocalyptic number.

It is an amenable number.

6531449 is a deficient number, since it is larger than the sum of its proper divisors (139015).

6531449 is a wasteful number, since it uses less digits than its factorization.

6531449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139014.

The product of its digits is 12960, while the sum is 32.

The square root of 6531449 is about 2555.6699708687. The cubic root of 6531449 is about 186.9260576811.

The spelling of 6531449 in words is "six million, five hundred thirty-one thousand, four hundred forty-nine".