27445 has 8 divisors (see below), whose sum is σ = 36000. Its totient is φ = 19920.

The previous prime is 27437. The next prime is 27449. The reversal of 27445 is 54472.

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

It is not a de Polignac number, because 27445 - 2³ = 27437 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195 + ... + 304.

It is an arithmetic number, because the mean of its divisors is an integer number (4500).

2²⁷⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

27445 is a deficient number, since it is larger than the sum of its proper divisors (8555).

27445 is a wasteful number, since it uses less digits than its factorization.

27445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515.

The product of its digits is 1120, while the sum is 22.

The square root of 27445 is about 165.6653252796. The cubic root of 27445 is about 30.1639175515.

It can be divided in two parts, 2 and 7445, that added together give a palindrome (7447).

The spelling of 27445 in words is "twenty-seven thousand, four hundred forty-five".