50421561 has 8 divisors (see below), whose sum is σ = 67433184. Its totient is φ = 33512160.

The previous prime is 50421557. The next prime is 50421599. The reversal of 50421561 is 16512405.

50421561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50421561 - 2² = 50421557 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50421521) 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 7 ways as a sum of consecutive naturals, for example, 24396 + ... + 26381.

It is an arithmetic number, because the mean of its divisors is an integer number (8429148).

Almost surely, 2^50421561 is an apocalyptic number.

It is an amenable number.

50421561 is a deficient number, since it is larger than the sum of its proper divisors (17011623).

50421561 is a wasteful number, since it uses less digits than its factorization.

50421561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51111.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 50421561 is about 7100.8141082555. The cubic root of 50421561 is about 369.4356162956.

Adding to 50421561 its reverse (16512405), we get a palindrome (66933966).

The spelling of 50421561 in words is "fifty million, four hundred twenty-one thousand, five hundred sixty-one".