549061 has 4 divisors (see below), whose sum is σ = 558124. Its totient is φ = 540000.

The previous prime is 549037. The next prime is 549071. The reversal of 549061 is 160945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160945 = 5 ⋅32189.

It can be written as a sum of positive squares in 2 ways, for example, as 50625 + 498436 = 225^2 + 706^2 .

It is a 4-Lehmer number, since φ(549061) divides (549061-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 549061 - 2¹⁵ = 516293 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549001) 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 3 ways as a sum of consecutive naturals, for example, 4440 + ... + 4561.

It is an arithmetic number, because the mean of its divisors is an integer number (139531).

2⁵⁴⁹⁰⁶¹ is an apocalyptic number.

It is an amenable number.

549061 is a deficient number, since it is larger than the sum of its proper divisors (9063).

549061 is an equidigital number, since it uses as much as digits as its factorization.

549061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9062.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 549061 is about 740.9865046005. The cubic root of 549061 is about 81.8854736713.

The spelling of 549061 in words is "five hundred forty-nine thousand, sixty-one".