162003 has 4 divisors (see below), whose sum is σ = 216008. Its totient is φ = 108000.

The previous prime is 161999. The next prime is 162007. The reversal of 162003 is 300261.

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

It is an interprime number because it is at equal distance from previous prime (161999) and next prime (162007).

It is not a de Polignac number, because 162003 - 2² = 161999 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 162003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162007) 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, 26998 + ... + 27003.

It is an arithmetic number, because the mean of its divisors is an integer number (54002).

2¹⁶²⁰⁰³ is an apocalyptic number.

162003 is a deficient number, since it is larger than the sum of its proper divisors (54005).

162003 is an equidigital number, since it uses as much as digits as its factorization.

162003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54004.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 162003 is about 402.4959627127. The cubic root of 162003 is about 54.5139542867.

Adding to 162003 its reverse (300261), we get a palindrome (462264).

The spelling of 162003 in words is "one hundred sixty-two thousand, three".