505224407 has 4 divisors (see below), whose sum is σ = 508570416. Its totient is φ = 501878400.

The previous prime is 505224367. The next prime is 505224409. The reversal of 505224407 is 704422505.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 505224407 - 2²⁰ = 504175831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505224407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505224409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672778 + ... + 1673079.

It is an arithmetic number, because the mean of its divisors is an integer number (127142604).

Almost surely, 2^505224407 is an apocalyptic number.

505224407 is a deficient number, since it is larger than the sum of its proper divisors (3346009).

505224407 is a wasteful number, since it uses less digits than its factorization.

505224407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346008.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 505224407 is about 22477.1974899007. The cubic root of 505224407 is about 796.4553629437.

The spelling of 505224407 in words is "five hundred five million, two hundred twenty-four thousand, four hundred seven".