549156 has 12 divisors (see below), whose sum is σ = 1281392. Its totient is φ = 183048.

The previous prime is 549149. The next prime is 549161. The reversal of 549156 is 651945.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

549156 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 in 3 ways as a sum of consecutive naturals, for example, 22870 + ... + 22893.

2⁵⁴⁹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

549156 is an abundant number, since it is smaller than the sum of its proper divisors (732236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549156 is a wasteful number, since it uses less digits than its factorization.

549156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45770 (or 45768 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 549156 is about 741.0506055594. The cubic root of 549156 is about 81.8901960800.

The spelling of 549156 in words is "five hundred forty-nine thousand, one hundred fifty-six".