545805765 has 12 divisors (see below), whose sum is σ = 946063404. Its totient is φ = 291096384.

The previous prime is 545805763. The next prime is 545805773. The reversal of 545805765 is 567508545.

545805765 is a `hidden beast` number, since 5 + 4 + 580 + 5 + 7 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 218123361 + 327682404 = 14769^2 + 18102^2 .

It is not a de Polignac number, because 545805765 - 2¹ = 545805763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 12129017 = 545805765 / (5 + 4 + 5 + 8 + 0 + 5 + 7 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 545805765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545805763) 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 11 ways as a sum of consecutive naturals, for example, 6064464 + ... + 6064553.

It is an arithmetic number, because the mean of its divisors is an integer number (78838617).

Almost surely, 2^545805765 is an apocalyptic number.

It is an amenable number.

545805765 is a deficient number, since it is larger than the sum of its proper divisors (400257639).

545805765 is a wasteful number, since it uses less digits than its factorization.

545805765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12129028 (or 12129025 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 45.

The square root of 545805765 is about 23362.4862760794. The cubic root of 545805765 is about 817.2332715668.

The spelling of 545805765 in words is "five hundred forty-five million, eight hundred five thousand, seven hundred sixty-five".