503450609 has 4 divisors (see below), whose sum is σ = 503645604. Its totient is φ = 503255616.

The previous prime is 503450573. The next prime is 503450621. The reversal of 503450609 is 906054305.

It is a happy number.

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 426835600 + 76615009 = 20660^2 + 8753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503450609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503450659) 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, 93572 + ... + 98805.

It is an arithmetic number, because the mean of its divisors is an integer number (125911401).

Almost surely, 2^503450609 is an apocalyptic number.

It is an amenable number.

503450609 is a deficient number, since it is larger than the sum of its proper divisors (194995).

503450609 is a wasteful number, since it uses less digits than its factorization.

503450609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194994.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 503450609 is about 22437.7050742717. The cubic root of 503450609 is about 795.5221753078.

The spelling of 503450609 in words is "five hundred three million, four hundred fifty thousand, six hundred nine".