6517138 has 4 divisors (see below), whose sum is σ = 9775710. Its totient is φ = 3258568.

The previous prime is 6517129. The next prime is 6517169. The reversal of 6517138 is 8317156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6487209 + 29929 = 2547^2 + 173^2 .

It is a super-2 number, since 2×6517138² = 84946175422088, which contains 22 as substring.

It is an Ulam number.

It is a plaindrome in base 12.

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 as a sum of consecutive naturals, namely, 1629283 + ... + 1629286.

Almost surely, 2^6517138 is an apocalyptic number.

6517138 is a deficient number, since it is larger than the sum of its proper divisors (3258572).

6517138 is a wasteful number, since it uses less digits than its factorization.

6517138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258571.

The product of its digits is 5040, while the sum is 31.

The square root of 6517138 is about 2552.8685825949. The cubic root of 6517138 is about 186.7894338381.

The spelling of 6517138 in words is "six million, five hundred seventeen thousand, one hundred thirty-eight".