170003 has 2 divisors, whose sum is σ = 170004. Its totient is φ = 170002.

The previous prime is 169991. The next prime is 170021. The reversal of 170003 is 300071.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 170003 - 2⁴ = 169987 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (170063) 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 as a sum of consecutive naturals, namely, 85001 + 85002.

It is an arithmetic number, because the mean of its divisors is an integer number (85002).

2¹⁷⁰⁰⁰³ is an apocalyptic number.

170003 is a deficient number, since it is larger than the sum of its proper divisors (1).

170003 is an equidigital number, since it uses as much as digits as its factorization.

170003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21, while the sum is 11.

The square root of 170003 is about 412.3142005801. The cubic root of 170003 is about 55.3969084279.

Adding to 170003 its reverse (300071), we get a palindrome (470074).

The spelling of 170003 in words is "one hundred seventy thousand, three", and thus it is an iban number.