50509001 has 2 divisors, whose sum is σ = 50509002. Its totient is φ = 50509000.

The previous prime is 50508979. The next prime is 50509073. The reversal of 50509001 is 10090505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30250000 + 20259001 = 5500^2 + 4501^2 .

It is a cyclic number.

It is not a de Polignac number, because 50509001 - 2⁶ = 50508937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50509301) 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, 25254500 + 25254501.

It is an arithmetic number, because the mean of its divisors is an integer number (25254501).

Almost surely, 2^50509001 is an apocalyptic number.

It is an amenable number.

50509001 is a deficient number, since it is larger than the sum of its proper divisors (1).

50509001 is an equidigital number, since it uses as much as digits as its factorization.

50509001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 50509001 is about 7106.9684817086. The cubic root of 50509001 is about 369.6490487658.

Adding to 50509001 its reverse (10090505), we get a palindrome (60599506).

The spelling of 50509001 in words is "fifty million, five hundred nine thousand, one".