549516 has 48 divisors (see below), whose sum is σ = 1467648. Its totient is φ = 158400.

The previous prime is 549511. The next prime is 549517. The reversal of 549516 is 615945.

549516 = T₁₃₁ + T₁₃₂ + ... + T₁₇₆.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 549516.

It is not an unprimeable number, because it can be changed into a prime (549511) by changing a digit.

549516 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 15 ways as a sum of consecutive naturals, for example, 2946 + ... + 3126.

It is an arithmetic number, because the mean of its divisors is an integer number (30576).

2⁵⁴⁹⁵¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (733824).

549516 is an abundant number, since it is smaller than the sum of its proper divisors (918132).

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

549516 is a wasteful number, since it uses less digits than its factorization.

549516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 220 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 549516 is about 741.2934641557. The cubic root of 549516 is about 81.9080865829.

The spelling of 549516 in words is "five hundred forty-nine thousand, five hundred sixteen".