50320561 has 4 divisors (see below), whose sum is σ = 53280612. Its totient is φ = 47360512.

The previous prime is 50320553. The next prime is 50320583. The reversal of 50320561 is 16502305.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21762225 + 28558336 = 4665^2 + 5344^2 .

It is a cyclic number.

It is not a de Polignac number, because 50320561 - 2³ = 50320553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50320591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1480000 + ... + 1480033.

It is an arithmetic number, because the mean of its divisors is an integer number (13320153).

Almost surely, 2^50320561 is an apocalyptic number.

It is an amenable number.

50320561 is a deficient number, since it is larger than the sum of its proper divisors (2960051).

50320561 is a wasteful number, since it uses less digits than its factorization.

50320561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960050.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 50320561 is about 7093.6986826338. The cubic root of 50320561 is about 369.1887778513.

Adding to 50320561 its reverse (16502305), we get a palindrome (66822866).

The spelling of 50320561 in words is "fifty million, three hundred twenty thousand, five hundred sixty-one".