503197109 has 4 divisors (see below), whose sum is σ = 503243904. Its totient is φ = 503150316.

The previous prime is 503197099. The next prime is 503197129. The reversal of 503197109 is 901791305.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 901791305 = 5 ⋅180358261.

It is a cyclic number.

It is not a de Polignac number, because 503197109 - 2⁸ = 503196853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503197129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1724 + ... + 31770.

It is an arithmetic number, because the mean of its divisors is an integer number (125810976).

Almost surely, 2^503197109 is an apocalyptic number.

It is an amenable number.

503197109 is a deficient number, since it is larger than the sum of its proper divisors (46795).

503197109 is a wasteful number, since it uses less digits than its factorization.

503197109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46794.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 503197109 is about 22432.0553895536. The cubic root of 503197109 is about 795.3886311063.

The spelling of 503197109 in words is "five hundred three million, one hundred ninety-seven thousand, one hundred nine".