545504165 has 4 divisors (see below), whose sum is σ = 654605004. Its totient is φ = 436403328.

The previous prime is 545504081. The next prime is 545504189. The reversal of 545504165 is 561405545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 561405545 = 5 ⋅112281109.

It can be written as a sum of positive squares in 2 ways, for example, as 358307041 + 187197124 = 18929^2 + 13682^2 .

It is a cyclic number.

It is not a de Polignac number, because 545504165 - 2²⁰ = 544455589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54550412 + ... + 54550421.

It is an arithmetic number, because the mean of its divisors is an integer number (163651251).

Almost surely, 2^545504165 is an apocalyptic number.

It is an amenable number.

545504165 is a deficient number, since it is larger than the sum of its proper divisors (109100839).

545504165 is a wasteful number, since it uses less digits than its factorization.

545504165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109100838.

The product of its (nonzero) digits is 60000, while the sum is 35.

The square root of 545504165 is about 23356.0305916909. The cubic root of 545504165 is about 817.0827155853.

The spelling of 545504165 in words is "five hundred forty-five million, five hundred four thousand, one hundred sixty-five".