50566909 has 2 divisors, whose sum is σ = 50566910. Its totient is φ = 50566908.

The previous prime is 50566871. The next prime is 50566931. The reversal of 50566909 is 90966505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33674809 + 16892100 = 5803^2 + 4110^2 .

It is a cyclic number.

It is not a de Polignac number, because 50566909 - 2¹⁹ = 50042621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50566939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25283454 + 25283455.

It is an arithmetic number, because the mean of its divisors is an integer number (25283455).

Almost surely, 2^50566909 is an apocalyptic number.

It is an amenable number.

50566909 is a deficient number, since it is larger than the sum of its proper divisors (1).

50566909 is an equidigital number, since it uses as much as digits as its factorization.

50566909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 50566909 is about 7111.0413442758. The cubic root of 50566909 is about 369.7902609686.

The spelling of 50566909 in words is "fifty million, five hundred sixty-six thousand, nine hundred nine".