545909403 has 16 divisors (see below), whose sum is σ = 794612000. Its totient is φ = 331340544.

The previous prime is 545909327. The next prime is 545909431. The reversal of 545909403 is 304909545.

It is not a de Polignac number, because 545909403 - 2¹⁰ = 545908379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (545909443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93028 + ... + 98721.

It is an arithmetic number, because the mean of its divisors is an integer number (49663250).

Almost surely, 2^545909403 is an apocalyptic number.

545909403 is a deficient number, since it is larger than the sum of its proper divisors (248702597).

545909403 is a wasteful number, since it uses less digits than its factorization.

545909403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191838.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 545909403 is about 23364.7042138350. The cubic root of 545909403 is about 817.2849939115.

The spelling of 545909403 in words is "five hundred forty-five million, nine hundred nine thousand, four hundred three".