550998 has 24 divisors (see below), whose sum is σ = 1364688. Its totient is φ = 157392.

The previous prime is 550997. The next prime is 551003. The reversal of 550998 is 899055.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 550998.

It is not an unprimeable number, because it can be changed into a prime (550993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2061 + ... + 2312.

It is an arithmetic number, because the mean of its divisors is an integer number (56862).

2⁵⁵⁰⁹⁹⁸ is an apocalyptic number.

550998 is an abundant number, since it is smaller than the sum of its proper divisors (813690).

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

550998 is a wasteful number, since it uses less digits than its factorization.

550998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388 (or 4385 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 550998 is about 742.2923952190. The cubic root of 550998 is about 81.9816536390.

The spelling of 550998 in words is "five hundred fifty thousand, nine hundred ninety-eight".