545307489 has 24 divisors (see below), whose sum is σ = 811873920. Its totient is φ = 352509408.

The previous prime is 545307473. The next prime is 545307493. The reversal of 545307489 is 984703545.

545307489 is a `hidden beast` number, since 545 + 30 + 74 + 8 + 9 = 666.

It is not a de Polignac number, because 545307489 - 2⁴ = 545307473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545307449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40194 + ... + 52020.

It is an arithmetic number, because the mean of its divisors is an integer number (33828080).

Almost surely, 2^545307489 is an apocalyptic number.

It is an amenable number.

545307489 is a deficient number, since it is larger than the sum of its proper divisors (266566431).

545307489 is a wasteful number, since it uses less digits than its factorization.

545307489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11989 (or 11986 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 545307489 is about 23351.8198220182. The cubic root of 545307489 is about 816.9845068167.

The spelling of 545307489 in words is "five hundred forty-five million, three hundred seven thousand, four hundred eighty-nine".