549432 has 48 divisors (see below), whose sum is σ = 1605240. Its totient is φ = 168768.

The previous prime is 549431. The next prime is 549443. The reversal of 549432 is 234945.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 549396 and 549405.

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 549432.

It is not an unprimeable number, because it can be changed into a prime (549431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 643 + ... + 1229.

2⁵⁴⁹⁴³² is an apocalyptic number.

549432 is a gapful number since it is divisible by the number (52) 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 549432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (802620).

549432 is an abundant number, since it is smaller than the sum of its proper divisors (1055808).

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

549432 is a wasteful number, since it uses less digits than its factorization.

549432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 605 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 549432 is about 741.2368042670. The cubic root of 549432 is about 81.9039128313.

It can be divided in two parts, 54943 and 2, that added together give a palindrome (54945).

The spelling of 549432 in words is "five hundred forty-nine thousand, four hundred thirty-two".