549922 has 4 divisors (see below), whose sum is σ = 824886. Its totient is φ = 274960.

The previous prime is 549911. The next prime is 549937. The reversal of 549922 is 229945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 229945 = 5 ⋅45989.

It can be written as a sum of positive squares in only one way, i.e., 549081 + 841 = 741^2 + 29^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 16.

It is an unprimeable number.

549922 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137479 + ... + 137482.

2⁵⁴⁹⁹²² is an apocalyptic number.

549922 is a deficient number, since it is larger than the sum of its proper divisors (274964).

549922 is a wasteful number, since it uses less digits than its factorization.

549922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274963.

The product of its digits is 6480, while the sum is 31.

The square root of 549922 is about 741.5672592557. The cubic root of 549922 is about 81.9282537219.

The spelling of 549922 in words is "five hundred forty-nine thousand, nine hundred twenty-two".