6537449 has 4 divisors (see below), whose sum is σ = 6545364. Its totient is φ = 6529536.

The previous prime is 6537439. The next prime is 6537457. The reversal of 6537449 is 9447356.

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 753424 + 5784025 = 868^2 + 2405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6537449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6537439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2552 + ... + 4425.

It is an arithmetic number, because the mean of its divisors is an integer number (1636341).

Almost surely, 2^6537449 is an apocalyptic number.

It is an amenable number.

6537449 is a deficient number, since it is larger than the sum of its proper divisors (7915).

6537449 is an equidigital number, since it uses as much as digits as its factorization.

6537449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7914.

The product of its digits is 90720, while the sum is 38.

The square root of 6537449 is about 2556.8435618942. The cubic root of 6537449 is about 186.9832789342.

The spelling of 6537449 in words is "six million, five hundred thirty-seven thousand, four hundred forty-nine".