6545555 has 8 divisors (see below), whose sum is σ = 7868544. Its totient is φ = 5227200.

The previous prime is 6545543. The next prime is 6545563. The reversal of 6545555 is 5555456.

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

It is a de Polignac number, because none of the positive numbers 2^k-6545555 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 4295 + ... + 5615.

It is an arithmetic number, because the mean of its divisors is an integer number (983568).

Almost surely, 2^6545555 is an apocalyptic number.

6545555 is a deficient number, since it is larger than the sum of its proper divisors (1322989).

6545555 is a wasteful number, since it uses less digits than its factorization.

6545555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317.

The product of its digits is 75000, while the sum is 35.

The square root of 6545555 is about 2558.4282284246. The cubic root of 6545555 is about 187.0605292725.

Subtracting from 6545555 its reverse (5555456), we obtain a palindrome (990099).

The spelling of 6545555 in words is "six million, five hundred forty-five thousand, five hundred fifty-five".