50667921 has 6 divisors (see below), whose sum is σ = 73187010. Its totient is φ = 33778608.

The previous prime is 50667917. The next prime is 50667937. The reversal of 50667921 is 12976605.

50667921 is a `hidden beast` number, since 506 + 67 + 92 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32901696 + 17766225 = 5736^2 + 4215^2 .

It is not a de Polignac number, because 50667921 - 2² = 50667917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50667971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2814876 + ... + 2814893.

It is an arithmetic number, because the mean of its divisors is an integer number (12197835).

Almost surely, 2^50667921 is an apocalyptic number.

It is an amenable number.

50667921 is a deficient number, since it is larger than the sum of its proper divisors (22519089).

50667921 is a wasteful number, since it uses less digits than its factorization.

50667921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629775 (or 5629772 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 50667921 is about 7118.1402767858. The cubic root of 50667921 is about 370.0363270882.

The spelling of 50667921 in words is "fifty million, six hundred sixty-seven thousand, nine hundred twenty-one".