549611 has 4 divisors (see below), whose sum is σ = 557424. Its totient is φ = 541800.

The previous prime is 549607. The next prime is 549623. The reversal of 549611 is 116945.

549611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 549611 - 2² = 549607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549641) 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, 3800 + ... + 3941.

It is an arithmetic number, because the mean of its divisors is an integer number (139356).

2⁵⁴⁹⁶¹¹ is an apocalyptic number.

549611 is a deficient number, since it is larger than the sum of its proper divisors (7813).

549611 is an equidigital number, since it uses as much as digits as its factorization.

549611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7812.

The product of its digits is 1080, while the sum is 26.

The square root of 549611 is about 741.3575385737. The cubic root of 549611 is about 81.9128063847.

The spelling of 549611 in words is "five hundred forty-nine thousand, six hundred eleven".