6515138 has 24 divisors (see below), whose sum is σ = 11970000. Its totient is φ = 2644488.

The previous prime is 6515129. The next prime is 6515153. The reversal of 6515138 is 8315156.

It is a self number, because there is not a number n which added to its sum of digits gives 6515138.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 113 + ... + 3611.

It is an arithmetic number, because the mean of its divisors is an integer number (498750).

Almost surely, 2^6515138 is an apocalyptic number.

6515138 is a deficient number, since it is larger than the sum of its proper divisors (5454862).

6515138 is a wasteful number, since it uses less digits than its factorization.

6515138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534 (or 3527 counting only the distinct ones).

The product of its digits is 3600, while the sum is 29.

The square root of 6515138 is about 2552.4768363298. The cubic root of 6515138 is about 186.7703243717.

The spelling of 6515138 in words is "six million, five hundred fifteen thousand, one hundred thirty-eight".