50120909 has 2 divisors, whose sum is σ = 50120910. Its totient is φ = 50120908.

The previous prime is 50120899. The next prime is 50120921. The reversal of 50120909 is 90902105.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39375625 + 10745284 = 6275^2 + 3278^2 .

It is a cyclic number.

It is not a de Polignac number, because 50120909 - 2²⁰ = 49072333 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50120009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25060454 + 25060455.

It is an arithmetic number, because the mean of its divisors is an integer number (25060455).

Almost surely, 2^50120909 is an apocalyptic number.

It is an amenable number.

50120909 is a deficient number, since it is larger than the sum of its proper divisors (1).

50120909 is an equidigital number, since it uses as much as digits as its factorization.

50120909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 50120909 is about 7079.6122068938. The cubic root of 50120909 is about 368.6998658645.

The spelling of 50120909 in words is "fifty million, one hundred twenty thousand, nine hundred nine".