50009903 has 16 divisors (see below), whose sum is σ = 55677600. Its totient is φ = 44731008.

The previous prime is 50009879. The next prime is 50009909. The reversal of 50009903 is 30990005.

It is not a de Polignac number, because 50009903 - 2⁸ = 50009647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50009909) 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 15 ways as a sum of consecutive naturals, for example, 1163000 + ... + 1163042.

It is an arithmetic number, because the mean of its divisors is an integer number (3479850).

Almost surely, 2^50009903 is an apocalyptic number.

50009903 is a deficient number, since it is larger than the sum of its proper divisors (5667697).

50009903 is an frugal number, since it uses more digits than its factorization.

50009903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 26.

The square root of 50009903 is about 7071.7680250415. The cubic root of 50009903 is about 368.4274702344.

Adding to 50009903 its reverse (30990005), we get a palindrome (80999908).

The spelling of 50009903 in words is "fifty million, nine thousand, nine hundred three".