500050921 has 2 divisors, whose sum is σ = 500050922. Its totient is φ = 500050920.

The previous prime is 500050909. The next prime is 500050927. The reversal of 500050921 is 129050005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487526400 + 12524521 = 22080^2 + 3539^2 .

It is a cyclic number.

It is not a de Polignac number, because 500050921 - 2¹¹ = 500048873 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 500050892 and 500050901.

It is not a weakly prime, because it can be changed into another prime (500050927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250025460 + 250025461.

It is an arithmetic number, because the mean of its divisors is an integer number (250025461).

Almost surely, 2^500050921 is an apocalyptic number.

It is an amenable number.

500050921 is a deficient number, since it is larger than the sum of its proper divisors (1).

500050921 is an equidigital number, since it uses as much as digits as its factorization.

500050921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 500050921 is about 22361.8183741842. The cubic root of 500050921 is about 793.7274690858.

The spelling of 500050921 in words is "five hundred million, fifty thousand, nine hundred twenty-one".