4045503 has 32 divisors (see below), whose sum is σ = 6838272. Its totient is φ = 2066400.

The previous prime is 4045501. The next prime is 4045523. The reversal of 4045503 is 3055404.

It is a happy number.

It is not a de Polignac number, because 4045503 - 2¹ = 4045501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 4045503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4045501) 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 31 ways as a sum of consecutive naturals, for example, 19068 + ... + 19278.

It is an arithmetic number, because the mean of its divisors is an integer number (213696).

Almost surely, 2^4045503 is an apocalyptic number.

4045503 is a deficient number, since it is larger than the sum of its proper divisors (2792769).

4045503 is a wasteful number, since it uses less digits than its factorization.

4045503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 4045503 is about 2011.3435807937. The cubic root of 4045503 is about 159.3397662982.

Subtracting from 4045503 its reverse (3055404), we obtain a palindrome (990099).

The spelling of 4045503 in words is "four million, forty-five thousand, five hundred three".