545769289 has 4 divisors (see below), whose sum is σ = 587751556. Its totient is φ = 503787024.

The previous prime is 545769251. The next prime is 545769307. The reversal of 545769289 is 982967545.

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 209670400 + 336098889 = 14480^2 + 18333^2 .

It is not a de Polignac number, because 545769289 - 2²³ = 537380681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545769089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20991114 + ... + 20991139.

It is an arithmetic number, because the mean of its divisors is an integer number (146937889).

Almost surely, 2^545769289 is an apocalyptic number.

It is an amenable number.

545769289 is a deficient number, since it is larger than the sum of its proper divisors (41982267).

545769289 is a wasteful number, since it uses less digits than its factorization.

545769289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41982266.

The product of its digits is 5443200, while the sum is 55.

The square root of 545769289 is about 23361.7056098222. The cubic root of 545769289 is about 817.2150660275.

The spelling of 545769289 in words is "five hundred forty-five million, seven hundred sixty-nine thousand, two hundred eighty-nine".