549457 has 4 divisors (see below), whose sum is σ = 581796. Its totient is φ = 517120.

The previous prime is 549449. The next prime is 549481. The reversal of 549457 is 754945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 754945 = 5 ⋅150989.

It can be written as a sum of positive squares in 2 ways, for example, as 318096 + 231361 = 564^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 549457 - 2³ = 549449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549257) 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, 16144 + ... + 16177.

It is an arithmetic number, because the mean of its divisors is an integer number (145449).

2⁵⁴⁹⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

549457 is a deficient number, since it is larger than the sum of its proper divisors (32339).

549457 is a wasteful number, since it uses less digits than its factorization.

549457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32338.

The product of its digits is 25200, while the sum is 34.

The square root of 549457 is about 741.2536677818. The cubic root of 549457 is about 81.9051550637.

The spelling of 549457 in words is "five hundred forty-nine thousand, four hundred fifty-seven".