27149 has 4 divisors (see below), whose sum is σ = 28764. Its totient is φ = 25536.

The previous prime is 27143. The next prime is 27179. The reversal of 27149 is 94172.

27149 = 10² + 11² + ... + 43².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13225 + 13924 = 115^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 27149 - 2⁸ = 26893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27143) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 782 + ... + 815.

It is an arithmetic number, because the mean of its divisors is an integer number (7191).

2²⁷¹⁴⁹ is an apocalyptic number.

It is an amenable number.

27149 is a deficient number, since it is larger than the sum of its proper divisors (1615).

27149 is a wasteful number, since it uses less digits than its factorization.

27149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614.

The product of its digits is 504, while the sum is 23.

The square root of 27149 is about 164.7695360193. The cubic root of 27149 is about 30.0550839818.

Adding to 27149 its sum of digits (23), we get a palindrome (27172).

The spelling of 27149 in words is "twenty-seven thousand, one hundred forty-nine".