6549154559 has 4 divisors (see below), whose sum is σ = 6551257440. Its totient is φ = 6547051680.

The previous prime is 6549154543. The next prime is 6549154561. The reversal of 6549154559 is 9554519456.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6549154559 - 2⁴ = 6549154543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6549154559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6549054559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046762 + ... + 1052999.

It is an arithmetic number, because the mean of its divisors is an integer number (1637814360).

Almost surely, 2^6549154559 is an apocalyptic number.

6549154559 is a deficient number, since it is larger than the sum of its proper divisors (2102881).

6549154559 is a wasteful number, since it uses less digits than its factorization.

6549154559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102880.

The product of its digits is 4860000, while the sum is 53.

The square root of 6549154559 is about 80926.8469606965. The cubic root of 6549154559 is about 1870.9481269189.

The spelling of 6549154559 in words is "six billion, five hundred forty-nine million, one hundred fifty-four thousand, five hundred fifty-nine".