549158 has 4 divisors (see below), whose sum is σ = 823740. Its totient is φ = 274578.

The previous prime is 549149. The next prime is 549161. The reversal of 549158 is 851945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 851945 = 5 ⋅170389.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 549158.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 137288 + ... + 137291.

It is an arithmetic number, because the mean of its divisors is an integer number (205935).

2⁵⁴⁹¹⁵⁸ is an apocalyptic number.

549158 is a deficient number, since it is larger than the sum of its proper divisors (274582).

549158 is a wasteful number, since it uses less digits than its factorization.

549158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274581.

The product of its digits is 7200, while the sum is 32.

The square root of 549158 is about 741.0519549937. The cubic root of 549158 is about 81.8902954933.

It can be divided in two parts, 549 and 158, that added together give a palindrome (707).

The spelling of 549158 in words is "five hundred forty-nine thousand, one hundred fifty-eight".