545042503 has 16 divisors (see below), whose sum is σ = 569963520. Its totient is φ = 520812000.

The previous prime is 545042489. The next prime is 545042507. The reversal of 545042503 is 305240545.

It is a cyclic number.

It is not a de Polignac number, because 545042503 - 2²⁵ = 511488071 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 (545042507) 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 15 ways as a sum of consecutive naturals, for example, 432288 + ... + 433546.

It is an arithmetic number, because the mean of its divisors is an integer number (35622720).

Almost surely, 2^545042503 is an apocalyptic number.

545042503 is a deficient number, since it is larger than the sum of its proper divisors (24921017).

545042503 is a wasteful number, since it uses less digits than its factorization.

545042503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 545042503 is about 23346.1453563538. The cubic root of 545042503 is about 816.8521505851.

It can be divided in two parts, 545042 and 503, that added together give a palindrome (545545).

The spelling of 545042503 in words is "five hundred forty-five million, forty-two thousand, five hundred three".