549424 has 20 divisors (see below), whose sum is σ = 1111536. Its totient is φ = 262592.

The previous prime is 549421. The next prime is 549431. The reversal of 549424 is 424945.

It is a junction number, because it is equal to n+sod(n) for n = 549392 and 549401.

It is not an unprimeable number, because it can be changed into a prime (549421) 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, 379 + ... + 1114.

2⁵⁴⁹⁴²⁴ is an apocalyptic number.

It is an amenable number.

549424 is an abundant number, since it is smaller than the sum of its proper divisors (562112).

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

549424 is a wasteful number, since it uses less digits than its factorization.

549424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524 (or 1518 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 549424 is about 741.2314078613. The cubic root of 549424 is about 81.9035153089.

It can be divided in two parts, 54942 and 4, that added together give a triangular number (54946 = T₃₃₁).

The spelling of 549424 in words is "five hundred forty-nine thousand, four hundred twenty-four".