27003 has 4 divisors (see below), whose sum is σ = 36008. Its totient is φ = 18000.

The previous prime is 26993. The next prime is 27011. The reversal of 27003 is 30072.

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

It is not a de Polignac number, because 27003 - 2⁴ = 26987 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4498 + ... + 4503.

It is an arithmetic number, because the mean of its divisors is an integer number (9002).

2²⁷⁰⁰³ is an apocalyptic number.

27003 is a deficient number, since it is larger than the sum of its proper divisors (9005).

27003 is an equidigital number, since it uses as much as digits as its factorization.

27003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9004.

The product of its (nonzero) digits is 42, while the sum is 12.

The square root of 27003 is about 164.3258957073. The cubic root of 27003 is about 30.0011110700.

Adding to 27003 its reverse (30072), we get a palindrome (57075).

It can be divided in two parts, 2700 and 3, that multiplied together give a square (8100 = 90²).

The spelling of 27003 in words is "twenty-seven thousand, three", and thus it is an iban number.