172003 has 8 divisors (see below), whose sum is σ = 188496. Its totient is φ = 156000.

The previous prime is 172001. The next prime is 172009. The reversal of 172003 is 300271.

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

It is not a de Polignac number, because 172003 - 2¹ = 172001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172001) 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, 1248 + ... + 1378.

It is an arithmetic number, because the mean of its divisors is an integer number (23562).

2¹⁷²⁰⁰³ is an apocalyptic number.

172003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

172003 is a deficient number, since it is larger than the sum of its proper divisors (16493).

172003 is a wasteful number, since it uses less digits than its factorization.

172003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 172003 is about 414.7324438719. The cubic root of 172003 is about 55.6133009946.

172003 divided by its sum of digits (13) gives a palindrome (13231).

Adding to 172003 its reverse (300271), we get a palindrome (472274).

The spelling of 172003 in words is "one hundred seventy-two thousand, three", and thus it is an iban number.