549800 has 24 divisors (see below), whose sum is σ = 1278750. Its totient is φ = 219840.

The previous prime is 549767. The next prime is 549817. The reversal of 549800 is 8945.

It can be written as a sum of positive squares in 3 ways, for example, as 293764 + 256036 = 542^2 + 506^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 549800.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1175 + ... + 1574.

2⁵⁴⁹⁸⁰⁰ is an apocalyptic number.

549800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

549800 is an abundant number, since it is smaller than the sum of its proper divisors (728950).

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

549800 is a wasteful number, since it uses less digits than its factorization.

549800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765 (or 2756 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 549800 is about 741.4849964767. The cubic root of 549800 is about 81.9221946891.

The spelling of 549800 in words is "five hundred forty-nine thousand, eight hundred".