5549 has 4 divisors (see below), whose sum is σ = 5760. Its totient is φ = 5340.

The previous prime is 5531. The next prime is 5557. The reversal of 5549 is 9455.

5549 = 42² + 43² + 44².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5549 - 2¹² = 1453 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13, base 15 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5519) 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, 59 + ... + 120.

It is an arithmetic number, because the mean of its divisors is an integer number (1440).

2⁵⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

5549 is a deficient number, since it is larger than the sum of its proper divisors (211).

5549 is a wasteful number, since it uses less digits than its factorization.

5549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210.

The product of its digits is 900, while the sum is 23.

The square root of 5549 is about 74.4916102659. The cubic root of 5549 is about 17.7040070939.

The spelling of 5549 in words is "five thousand, five hundred forty-nine".