2173503 has 8 divisors (see below), whose sum is σ = 2991616. Its totient is φ = 1402200.

The previous prime is 2173499. The next prime is 2173513. The reversal of 2173503 is 3053712.

It is a happy number.

2173503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2173503 - 2² = 2173499 is a prime.

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 2173503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11593 + ... + 11778.

It is an arithmetic number, because the mean of its divisors is an integer number (373952).

2^2173503 is an apocalyptic number.

2173503 is a deficient number, since it is larger than the sum of its proper divisors (818113).

2173503 is a wasteful number, since it uses less digits than its factorization.

2173503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23405.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 2173503 is about 1474.2805024825. The cubic root of 2173503 is about 129.5348862248.

The spelling of 2173503 in words is "two million, one hundred seventy-three thousand, five hundred three".