50825809 has 2 divisors, whose sum is σ = 50825810. Its totient is φ = 50825808.

The previous prime is 50825807. The next prime is 50825813. The reversal of 50825809 is 90852805.

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., 28998225 + 21827584 = 5385^2 + 4672^2 .

It is a cyclic number.

It is not a de Polignac number, because 50825809 - 2¹ = 50825807 is a prime.

Together with 50825807, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50825807) 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 as a sum of consecutive naturals, namely, 25412904 + 25412905.

It is an arithmetic number, because the mean of its divisors is an integer number (25412905).

Almost surely, 2^50825809 is an apocalyptic number.

It is an amenable number.

50825809 is a deficient number, since it is larger than the sum of its proper divisors (1).

50825809 is an equidigital number, since it uses as much as digits as its factorization.

50825809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 50825809 is about 7129.2221875882. Note that the first 3 decimals coincide. The cubic root of 50825809 is about 370.4202893885.

The spelling of 50825809 in words is "fifty million, eight hundred twenty-five thousand, eight hundred nine".