549226656 has 144 divisors (see below), whose sum is σ = 1767231648. Its totient is φ = 166406400.

The previous prime is 549226619. The next prime is 549226661. The reversal of 549226656 is 656622945.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82326 + ... + 88746.

It is an arithmetic number, because the mean of its divisors is an integer number (12272442).

Almost surely, 2^549226656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549226656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883615824).

549226656 is an abundant number, since it is smaller than the sum of its proper divisors (1218004992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549226656 is a wasteful number, since it uses less digits than its factorization.

549226656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6457 (or 6437 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 549226656 is about 23435.5852497863. The cubic root of 549226656 is about 818.9370800594.

The spelling of 549226656 in words is "five hundred forty-nine million, two hundred twenty-six thousand, six hundred fifty-six".