6512540 has 12 divisors (see below), whose sum is σ = 13676376. Its totient is φ = 2605008.

The previous prime is 6512537. The next prime is 6512579. The reversal of 6512540 is 452156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162794 + ... + 162833.

It is an arithmetic number, because the mean of its divisors is an integer number (1139698).

Almost surely, 2^6512540 is an apocalyptic number.

It is an amenable number.

6512540 is an abundant number, since it is smaller than the sum of its proper divisors (7163836).

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

6512540 is a wasteful number, since it uses less digits than its factorization.

6512540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325636 (or 325634 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 6512540 is about 2551.9678681363. The cubic root of 6512540 is about 186.7454953344.

Adding to 6512540 its reverse (452156), we get a palindrome (6964696).

The spelling of 6512540 in words is "six million, five hundred twelve thousand, five hundred forty".