545023165 has 4 divisors (see below), whose sum is σ = 654027804. Its totient is φ = 436018528.

The previous prime is 545023163. The next prime is 545023177. The reversal of 545023165 is 561320545.

545023165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 95667961 + 449355204 = 9781^2 + 21198^2 .

It is a cyclic number.

It is not a de Polignac number, because 545023165 - 2¹ = 545023163 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545023163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54502312 + ... + 54502321.

It is an arithmetic number, because the mean of its divisors is an integer number (163506951).

Almost surely, 2^545023165 is an apocalyptic number.

It is an amenable number.

545023165 is a deficient number, since it is larger than the sum of its proper divisors (109004639).

545023165 is a wasteful number, since it uses less digits than its factorization.

545023165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109004638.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 545023165 is about 23345.7311943747. The cubic root of 545023165 is about 816.8424898867.

The spelling of 545023165 in words is "five hundred forty-five million, twenty-three thousand, one hundred sixty-five".