6531536 has 80 divisors (see below), whose sum is σ = 15266880. Its totient is φ = 2672640.

The previous prime is 6531533. The next prime is 6531557. The reversal of 6531536 is 6351356.

It is a junction number, because it is equal to n+sod(n) for n = 6531499 and 6531508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6531533) 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 15 ways as a sum of consecutive naturals, for example, 110675 + ... + 110733.

It is an arithmetic number, because the mean of its divisors is an integer number (190836).

Almost surely, 2^6531536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6531536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7633440).

6531536 is an abundant number, since it is smaller than the sum of its proper divisors (8735344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6531536 is a wasteful number, since it uses less digits than its factorization.

6531536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 126 counting only the distinct ones).

The product of its digits is 8100, while the sum is 29.

The square root of 6531536 is about 2555.6869917891. The cubic root of 6531536 is about 186.9268876396.

The spelling of 6531536 in words is "six million, five hundred thirty-one thousand, five hundred thirty-six".