550656 has 54 divisors (see below), whose sum is σ = 1594320. Its totient is φ = 182784.

The previous prime is 550651. The next prime is 550657. The reversal of 550656 is 656055.

550656 is a `hidden beast` number, since 5 + 5 + 0 + 656 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2185 + ... + 2423.

2⁵⁵⁰⁶⁵⁶ 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 550656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (797160).

550656 is an abundant number, since it is smaller than the sum of its proper divisors (1043664).

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

550656 is a wasteful number, since it uses less digits than its factorization.

550656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 550656 is about 742.0619920195. The cubic root of 550656 is about 81.9646883454.

The spelling of 550656 in words is "five hundred fifty thousand, six hundred fifty-six".