55149 has 8 divisors (see below), whose sum is σ = 76032. Its totient is φ = 35520.

The previous prime is 55147. The next prime is 55163. The reversal of 55149 is 94155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55149 - 2¹ = 55147 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204 + ... + 389.

It is an arithmetic number, because the mean of its divisors is an integer number (9504).

2⁵⁵¹⁴⁹ is an apocalyptic number.

It is an amenable number.

55149 is a deficient number, since it is larger than the sum of its proper divisors (20883).

55149 is a wasteful number, since it uses less digits than its factorization.

55149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627.

The product of its digits is 900, while the sum is 24.

The square root of 55149 is about 234.8382422009. The cubic root of 55149 is about 38.0638354556.

The spelling of 55149 in words is "fifty-five thousand, one hundred forty-nine".