549380 has 24 divisors (see below), whose sum is σ = 1243032. Its totient is φ = 202752.

The previous prime is 549379. The next prime is 549391. The reversal of 549380 is 83945.

549380 = 58² + 59² + ... + 122².

It can be written as a sum of positive squares in 4 ways, for example, as 33856 + 515524 = 184^2 + 718^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797 + ... + 1316.

It is an arithmetic number, because the mean of its divisors is an integer number (51793).

2⁵⁴⁹³⁸⁰ is an apocalyptic number.

It is an amenable number.

549380 is an abundant number, since it is smaller than the sum of its proper divisors (693652).

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

549380 is a wasteful number, since it uses less digits than its factorization.

549380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135 (or 2133 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 549380 is about 741.2017269273. The cubic root of 549380 is about 81.9013288671.

It can be divided in two parts, 549 and 380, that added together give a palindrome (929).

The spelling of 549380 in words is "five hundred forty-nine thousand, three hundred eighty".