50940209 has 2 divisors, whose sum is σ = 50940210. Its totient is φ = 50940208.

The previous prime is 50940191. The next prime is 50940277. The reversal of 50940209 is 90204905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34105600 + 16834609 = 5840^2 + 4103^2 .

It is a cyclic number.

It is not a de Polignac number, because 50940209 - 2¹⁶ = 50874673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (50940289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25470104 + 25470105.

It is an arithmetic number, because the mean of its divisors is an integer number (25470105).

Almost surely, 2^50940209 is an apocalyptic number.

It is an amenable number.

50940209 is a deficient number, since it is larger than the sum of its proper divisors (1).

50940209 is an equidigital number, since it uses as much as digits as its factorization.

50940209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 50940209 is about 7137.2409935493. The cubic root of 50940209 is about 370.6979982134.

The spelling of 50940209 in words is "fifty million, nine hundred forty thousand, two hundred nine".