50503309 has 8 divisors (see below), whose sum is σ = 52482560. Its totient is φ = 48546000.

The previous prime is 50503283. The next prime is 50503339. The reversal of 50503309 is 90330505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-50503309 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 (50503339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714 + ... + 10075.

It is an arithmetic number, because the mean of its divisors is an integer number (6560320).

Almost surely, 2^50503309 is an apocalyptic number.

It is an amenable number.

50503309 is a deficient number, since it is larger than the sum of its proper divisors (1979251).

50503309 is a wasteful number, since it uses less digits than its factorization.

50503309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10971.

The product of its (nonzero) digits is 2025, while the sum is 25.

The square root of 50503309 is about 7106.5680183897. The cubic root of 50503309 is about 369.6351626505.

The spelling of 50503309 in words is "fifty million, five hundred three thousand, three hundred nine".