50916209 has 4 divisors (see below), whose sum is σ = 51020400. Its totient is φ = 50812020.

The previous prime is 50916197. The next prime is 50916247. The reversal of 50916209 is 90261905.

50916209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 90261905 = 5 ⋅18052381.

It is a cyclic number.

It is not a de Polignac number, because 50916209 - 2⁴ = 50916193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50916269) 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, 51359 + ... + 52340.

It is an arithmetic number, because the mean of its divisors is an integer number (12755100).

Almost surely, 2^50916209 is an apocalyptic number.

It is an amenable number.

50916209 is a deficient number, since it is larger than the sum of its proper divisors (104191).

50916209 is a wasteful number, since it uses less digits than its factorization.

50916209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104190.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 50916209 is about 7135.5594735101. The cubic root of 50916209 is about 370.6397721107.

The spelling of 50916209 in words is "fifty million, nine hundred sixteen thousand, two hundred nine".