2145503 has 8 divisors (see below), whose sum is σ = 2211840. Its totient is φ = 2080120.

The previous prime is 2145497. The next prime is 2145529. The reversal of 2145503 is 3055412.

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

It is a cyclic number.

It is not a de Polignac number, because 2145503 - 2⁴ = 2145487 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 (2145103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8858 + ... + 9096.

It is an arithmetic number, because the mean of its divisors is an integer number (276480).

2^2145503 is an apocalyptic number.

2145503 is a deficient number, since it is larger than the sum of its proper divisors (66337).

2145503 is a wasteful number, since it uses less digits than its factorization.

2145503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2145503 is about 1464.7535628904. The cubic root of 2145503 is about 128.9762390385.

Subtracting 2145503 from its reverse (3055412), we obtain a palindrome (909909).

The spelling of 2145503 in words is "two million, one hundred forty-five thousand, five hundred three".