109173503 has 4 divisors (see below), whose sum is σ = 109244568. Its totient is φ = 109102440.

The previous prime is 109173457. The next prime is 109173521. The reversal of 109173503 is 305371901.

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 109173503 - 2¹⁸ = 108911359 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 (109173523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33176 + ... + 36317.

It is an arithmetic number, because the mean of its divisors is an integer number (27311142).

Almost surely, 2^109173503 is an apocalyptic number.

109173503 is a deficient number, since it is larger than the sum of its proper divisors (71065).

109173503 is an equidigital number, since it uses as much as digits as its factorization.

109173503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71064.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 109173503 is about 10448.6124916182. The cubic root of 109173503 is about 477.9389390558.

The spelling of 109173503 in words is "one hundred nine million, one hundred seventy-three thousand, five hundred three".