50947909 has 2 divisors, whose sum is σ = 50947910. Its totient is φ = 50947908.

The previous prime is 50947901. The next prime is 50947931. The reversal of 50947909 is 90974905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43230625 + 7717284 = 6575^2 + 2778^2 .

It is a cyclic number.

It is not a de Polignac number, because 50947909 - 2³ = 50947901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50947901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25473954 + 25473955.

It is an arithmetic number, because the mean of its divisors is an integer number (25473955).

Almost surely, 2^50947909 is an apocalyptic number.

It is an amenable number.

50947909 is a deficient number, since it is larger than the sum of its proper divisors (1).

50947909 is an equidigital number, since it uses as much as digits as its factorization.

50947909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 50947909 is about 7137.7803972944. The cubic root of 50947909 is about 370.7166752130.

The spelling of 50947909 in words is "fifty million, nine hundred forty-seven thousand, nine hundred nine".