549722 has 4 divisors (see below), whose sum is σ = 824586. Its totient is φ = 274860.

The previous prime is 549719. The next prime is 549733. The reversal of 549722 is 227945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 227945 = 5 ⋅45589.

It can be written as a sum of positive squares in only one way, i.e., 516961 + 32761 = 719^2 + 181^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137429 + ... + 137432.

2⁵⁴⁹⁷²² is an apocalyptic number.

549722 is a deficient number, since it is larger than the sum of its proper divisors (274864).

549722 is a wasteful number, since it uses less digits than its factorization.

549722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274863.

The product of its digits is 5040, while the sum is 29.

The square root of 549722 is about 741.4323974578. The cubic root of 549722 is about 81.9183204116.

The spelling of 549722 in words is "five hundred forty-nine thousand, seven hundred twenty-two".