549331 has 2 divisors, whose sum is σ = 549332. Its totient is φ = 549330.

The previous prime is 549323. The next prime is 549379. The reversal of 549331 is 133945.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 549331 - 2³ = 549323 is a prime.

It is a super-2 number, since 2×549331² = 603529095122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 549296 and 549305.

It is not a weakly prime, because it can be changed into another prime (549391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274665 + 274666.

It is an arithmetic number, because the mean of its divisors is an integer number (274666).

2⁵⁴⁹³³¹ is an apocalyptic number.

549331 is a deficient number, since it is larger than the sum of its proper divisors (1).

549331 is an equidigital number, since it uses as much as digits as its factorization.

549331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 25.

The square root of 549331 is about 741.1686717610. The cubic root of 549331 is about 81.8988938285.

The spelling of 549331 in words is "five hundred forty-nine thousand, three hundred thirty-one".