2172503 has 4 divisors (see below), whose sum is σ = 2185680. Its totient is φ = 2159328.

The previous prime is 2172497. The next prime is 2172539. The reversal of 2172503 is 3052712.

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

It is a cyclic number.

It is not a de Polignac number, because 2172503 - 2¹² = 2168407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172563) 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, 6338 + ... + 6671.

It is an arithmetic number, because the mean of its divisors is an integer number (546420).

2^2172503 is an apocalyptic number.

2172503 is a deficient number, since it is larger than the sum of its proper divisors (13177).

2172503 is a wasteful number, since it uses less digits than its factorization.

2172503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13176.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 2172503 is about 1473.9413149783. The cubic root of 2172503 is about 129.5150174144.

The spelling of 2172503 in words is "two million, one hundred seventy-two thousand, five hundred three".