50431909 has 16 divisors (see below), whose sum is σ = 58222080. Its totient is φ = 43202160.

The previous prime is 50431907. The next prime is 50431937. The reversal of 50431909 is 90913405.

It is a cyclic number.

It is not a de Polignac number, because 50431909 - 2¹ = 50431907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50431907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46912 + ... + 47974.

It is an arithmetic number, because the mean of its divisors is an integer number (3638880).

Almost surely, 2^50431909 is an apocalyptic number.

It is an amenable number.

50431909 is a deficient number, since it is larger than the sum of its proper divisors (7790171).

50431909 is a wasteful number, since it uses less digits than its factorization.

50431909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 50431909 is about 7101.5427197194. The cubic root of 50431909 is about 369.4608876160.

The spelling of 50431909 in words is "fifty million, four hundred thirty-one thousand, nine hundred nine".