549502 has 4 divisors (see below), whose sum is σ = 824256. Its totient is φ = 274750.

The previous prime is 549481. The next prime is 549503. The reversal of 549502 is 205945.

549502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 205945 = 5 ⋅41189.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549503) by changing a digit.

549502 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, 137374 + ... + 137377.

It is an arithmetic number, because the mean of its divisors is an integer number (206064).

2⁵⁴⁹⁵⁰² is an apocalyptic number.

549502 is a deficient number, since it is larger than the sum of its proper divisors (274754).

549502 is a wasteful number, since it uses less digits than its factorization.

549502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274753.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 549502 is about 741.2840211417. The cubic root of 549502 is about 81.9073909871.

The spelling of 549502 in words is "five hundred forty-nine thousand, five hundred two".