5545503 has 14 divisors (see below), whose sum is σ = 8315544. Its totient is φ = 3696516.

The previous prime is 5545499. The next prime is 5545513. The reversal of 5545503 is 3055455.

It is not a de Polignac number, because 5545503 - 2² = 5545499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

5545503 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5545513) 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 13 ways as a sum of consecutive naturals, for example, 3075 + ... + 4532.

Almost surely, 2^5545503 is an apocalyptic number.

5545503 is a deficient number, since it is larger than the sum of its proper divisors (2770041).

5545503 is an frugal number, since it uses more digits than its factorization.

5545503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7625 (or 7610 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 5545503 is about 2354.8891693666. The cubic root of 5545503 is about 177.0028726911.

The spelling of 5545503 in words is "five million, five hundred forty-five thousand, five hundred three".