549900 has 108 divisors (see below), whose sum is σ = 1895712. Its totient is φ = 132480.

The previous prime is 549883. The next prime is 549911. The reversal of 549900 is 9945.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11677 + ... + 11723.

2⁵⁴⁹⁹⁰⁰ is an apocalyptic number.

549900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (947856).

549900 is an abundant number, since it is smaller than the sum of its proper divisors (1345812).

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

549900 is a wasteful number, since it uses less digits than its factorization.

549900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 549900 is about 741.5524256585. The cubic root of 549900 is about 81.9271611756.

The spelling of 549900 in words is "five hundred forty-nine thousand, nine hundred".