550816 has 24 divisors (see below), whose sum is σ = 1239840. Its totient is φ = 235968.

The previous prime is 550813. The next prime is 550831. The reversal of 550816 is 618055.

It is not an unprimeable number, because it can be changed into a prime (550811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006 + ... + 1453.

It is an arithmetic number, because the mean of its divisors is an integer number (51660).

2⁵⁵⁰⁸¹⁶ is an apocalyptic number.

550816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

550816 is an abundant number, since it is smaller than the sum of its proper divisors (689024).

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

550816 is a wasteful number, since it uses less digits than its factorization.

550816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476 (or 2468 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 550816 is about 742.1697918940. The cubic root of 550816 is about 81.9726261990.

The spelling of 550816 in words is "five hundred fifty thousand, eight hundred sixteen".