50320661 has 4 divisors (see below), whose sum is σ = 50346924. Its totient is φ = 50294400.

The previous prime is 50320649. The next prime is 50320681. The reversal of 50320661 is 16602305.

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 28408900 + 21911761 = 5330^2 + 4681^2 .

It is a cyclic number.

It is not a de Polignac number, because 50320661 - 2¹⁰ = 50319637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50320601) 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, 10010 + ... + 14171.

It is an arithmetic number, because the mean of its divisors is an integer number (12586731).

Almost surely, 2^50320661 is an apocalyptic number.

It is an amenable number.

50320661 is a deficient number, since it is larger than the sum of its proper divisors (26263).

50320661 is a wasteful number, since it uses less digits than its factorization.

50320661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26262.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 50320661 is about 7093.7057311394. The cubic root of 50320661 is about 369.1890224091.

Adding to 50320661 its reverse (16602305), we get a palindrome (66922966).

The spelling of 50320661 in words is "fifty million, three hundred twenty thousand, six hundred sixty-one".