504505405 has 4 divisors (see below), whose sum is σ = 605406492. Its totient is φ = 403604320.

The previous prime is 504505399. The next prime is 504505411.

504505405 is nontrivially palindromic in base 10.

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

It is an interprime number because it is at equal distance from previous prime (504505399) and next prime (504505411).

It can be written as a sum of positive squares in 2 ways, for example, as 189833284 + 314672121 = 13778^2 + 17739^2 .

It is not a de Polignac number, because 504505405 - 2¹¹ = 504503357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 50450536 + ... + 50450545.

It is an arithmetic number, because the mean of its divisors is an integer number (151351623).

Almost surely, 2^504505405 is an apocalyptic number.

It is an amenable number.

504505405 is a deficient number, since it is larger than the sum of its proper divisors (100901087).

504505405 is a wasteful number, since it uses less digits than its factorization.

504505405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100901086.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 504505405 is about 22461.1977641443. The cubic root of 504505405 is about 796.0773626862.

Adding to 504505405 its product of nonzero digits (10000), we get a palindrome (504515405).

It can be divided in two parts, 50450 and 5405, that added together give a palindrome (55855).

The spelling of 504505405 in words is "five hundred four million, five hundred five thousand, four hundred five".