545173147 has 4 divisors (see below), whose sum is σ = 545299240. Its totient is φ = 545047056.

The previous prime is 545173141. The next prime is 545173169. The reversal of 545173147 is 741371545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545173147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545173141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56322 + ... + 65287.

It is an arithmetic number, because the mean of its divisors is an integer number (136324810).

Almost surely, 2^545173147 is an apocalyptic number.

545173147 is a deficient number, since it is larger than the sum of its proper divisors (126093).

545173147 is a wasteful number, since it uses less digits than its factorization.

545173147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126092.

The product of its digits is 58800, while the sum is 37.

The square root of 545173147 is about 23348.9431666617. The cubic root of 545173147 is about 816.9174105152.

The spelling of 545173147 in words is "five hundred forty-five million, one hundred seventy-three thousand, one hundred forty-seven".