50509621 has 2 divisors, whose sum is σ = 50509622. Its totient is φ = 50509620.

The previous prime is 50509609. The next prime is 50509637. The reversal of 50509621 is 12690505.

50509621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33814225 + 16695396 = 5815^2 + 4086^2 .

It is a cyclic number.

It is not a de Polignac number, because 50509621 - 2⁷ = 50509493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50509621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50509691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25254810 + 25254811.

It is an arithmetic number, because the mean of its divisors is an integer number (25254811).

Almost surely, 2^50509621 is an apocalyptic number.

It is an amenable number.

50509621 is a deficient number, since it is larger than the sum of its proper divisors (1).

50509621 is an equidigital number, since it uses as much as digits as its factorization.

50509621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 50509621 is about 7107.0121007354. The cubic root of 50509621 is about 369.6505612452.

The spelling of 50509621 in words is "fifty million, five hundred nine thousand, six hundred twenty-one".