50012561 has 4 divisors (see below), whose sum is σ = 50220324. Its totient is φ = 49804800.

The previous prime is 50012539. The next prime is 50012621. The reversal of 50012561 is 16521005.

50012561 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 32706961 + 17305600 = 5719^2 + 4160^2 .

It is a cyclic number.

It is not a de Polignac number, because 50012561 - 2²² = 45818257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50011561) 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, 103520 + ... + 104001.

It is an arithmetic number, because the mean of its divisors is an integer number (12555081).

Almost surely, 2^50012561 is an apocalyptic number.

It is an amenable number.

50012561 is a deficient number, since it is larger than the sum of its proper divisors (207763).

50012561 is a wasteful number, since it uses less digits than its factorization.

50012561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207762.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 50012561 is about 7071.9559529171. The cubic root of 50012561 is about 368.4339973608.

Adding to 50012561 its reverse (16521005), we get a palindrome (66533566).

The spelling of 50012561 in words is "fifty million, twelve thousand, five hundred sixty-one".