6549557450 has 48 divisors (see below), whose sum is σ = 12840457920. Its totient is φ = 2478625920.

The previous prime is 6549557449. The next prime is 6549557453. The reversal of 6549557450 is 547559456.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6549557453) 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 23 ways as a sum of consecutive naturals, for example, 777662 + ... + 786038.

It is an arithmetic number, because the mean of its divisors is an integer number (267509540).

Almost surely, 2^6549557450 is an apocalyptic number.

6549557450 is a deficient number, since it is larger than the sum of its proper divisors (6290900470).

6549557450 is a wasteful number, since it uses less digits than its factorization.

6549557450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9231 (or 9226 counting only the distinct ones).

The product of its (nonzero) digits is 3780000, while the sum is 50.

The square root of 6549557450 is about 80929.3361519789. The cubic root of 6549557450 is about 1870.9864918050.

The spelling of 6549557450 in words is "six billion, five hundred forty-nine million, five hundred fifty-seven thousand, four hundred fifty".