6540513 has 8 divisors (see below), whose sum is σ = 9966528. Its totient is φ = 3737424.

The previous prime is 6540511. The next prime is 6540539. The reversal of 6540513 is 3150456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6540513 - 2¹ = 6540511 is a prime.

6540513 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155706 + ... + 155747.

It is an arithmetic number, because the mean of its divisors is an integer number (1245816).

Almost surely, 2^6540513 is an apocalyptic number.

It is an amenable number.

6540513 is a deficient number, since it is larger than the sum of its proper divisors (3426015).

6540513 is a wasteful number, since it uses less digits than its factorization.

6540513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311463.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 6540513 is about 2557.4426679791. The cubic root of 6540513 is about 187.0124864168.

Adding to 6540513 its reverse (3150456), we get a palindrome (9690969).

The spelling of 6540513 in words is "six million, five hundred forty thousand, five hundred thirteen".