545623903 has 8 divisors (see below), whose sum is σ = 598792320. Its totient is φ = 493049880.

The previous prime is 545623889. The next prime is 545623907. The reversal of 545623903 is 309326545.

545623903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 545623903 - 2⁹ = 545623391 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 (545623907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146673 + ... + 150346.

It is an arithmetic number, because the mean of its divisors is an integer number (74849040).

Almost surely, 2^545623903 is an apocalyptic number.

545623903 is a deficient number, since it is larger than the sum of its proper divisors (53168417).

545623903 is a wasteful number, since it uses less digits than its factorization.

545623903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297197.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 545623903 is about 23358.5937718862. The cubic root of 545623903 is about 817.1424943484.

The spelling of 545623903 in words is "five hundred forty-five million, six hundred twenty-three thousand, nine hundred three".