6518481 has 4 divisors (see below), whose sum is σ = 8691312. Its totient is φ = 4345652.

The previous prime is 6518461. The next prime is 6518489. The reversal of 6518481 is 1848156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6518481 - 2¹⁸ = 6256337 is a prime.

It is a super-2 number, since 2×6518481² = 84981189094722, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6518489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086411 + ... + 1086416.

It is an arithmetic number, because the mean of its divisors is an integer number (2172828).

Almost surely, 2^6518481 is an apocalyptic number.

It is an amenable number.

6518481 is a deficient number, since it is larger than the sum of its proper divisors (2172831).

6518481 is a wasteful number, since it uses less digits than its factorization.

6518481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172830.

The product of its digits is 7680, while the sum is 33.

The square root of 6518481 is about 2553.1316064786. The cubic root of 6518481 is about 186.8022636509.

The spelling of 6518481 in words is "six million, five hundred eighteen thousand, four hundred eighty-one".