550990 has 16 divisors (see below), whose sum is σ = 1082160. Its totient is φ = 200320.

The previous prime is 550973. The next prime is 550993. The reversal of 550990 is 99055.

550990 is a modest number, since divided by 990 gives 550 as remainder.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2395 + ... + 2614.

It is an arithmetic number, because the mean of its divisors is an integer number (67635).

2⁵⁵⁰⁹⁹⁰ is an apocalyptic number.

550990 is a deficient number, since it is larger than the sum of its proper divisors (531170).

550990 is a wasteful number, since it uses less digits than its factorization.

550990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027.

The product of its (nonzero) digits is 2025, while the sum is 28.

The square root of 550990 is about 742.2870064874. The cubic root of 550990 is about 81.9812568702.

It can be divided in two parts, 550 and 990, that added together give a triangular number (1540 = T₅₅).

The spelling of 550990 in words is "five hundred fifty thousand, nine hundred ninety".