50605561 has 4 divisors (see below), whose sum is σ = 50625652. Its totient is φ = 50585472.

The previous prime is 50605553. The next prime is 50605567. The reversal of 50605561 is 16550605.

50605561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16160400 + 34445161 = 4020^2 + 5869^2 .

It is a cyclic number.

It is not a de Polignac number, because 50605561 - 2³ = 50605553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50605567) 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 in 3 ways as a sum of consecutive naturals, for example, 5616 + ... + 11521.

It is an arithmetic number, because the mean of its divisors is an integer number (12656413).

Almost surely, 2^50605561 is an apocalyptic number.

It is an amenable number.

50605561 is a deficient number, since it is larger than the sum of its proper divisors (20091).

50605561 is a wasteful number, since it uses less digits than its factorization.

50605561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20090.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 50605561 is about 7113.7585705448. The cubic root of 50605561 is about 369.8844562519.

The spelling of 50605561 in words is "fifty million, six hundred five thousand, five hundred sixty-one".