2170003 has 4 divisors (see below), whose sum is σ = 2367288. Its totient is φ = 1972720.

The previous prime is 2169997. The next prime is 2170039. The reversal of 2170003 is 3000712.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2170003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2170043) 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, 98626 + ... + 98647.

It is an arithmetic number, because the mean of its divisors is an integer number (591822).

2^2170003 is an apocalyptic number.

2170003 is a deficient number, since it is larger than the sum of its proper divisors (197285).

2170003 is a wasteful number, since it uses less digits than its factorization.

2170003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197284.

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

The square root of 2170003 is about 1473.0930045316. The cubic root of 2170003 is about 129.4653186994.

Adding to 2170003 its reverse (3000712), we get a palindrome (5170715).

The spelling of 2170003 in words is "two million, one hundred seventy thousand, three".