50500005421 has 2 divisors, whose sum is σ = 50500005422. Its totient is φ = 50500005420.

The previous prime is 50500005403. The next prime is 50500005497. The reversal of 50500005421 is 12450000505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33236936100 + 17263069321 = 182310^2 + 131389^2 .

It is a cyclic number.

It is not a de Polignac number, because 50500005421 - 2¹¹ = 50500003373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50500005392 and 50500005401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50500005121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25250002710 + 25250002711.

It is an arithmetic number, because the mean of its divisors is an integer number (25250002711).

Almost surely, 2^50500005421 is an apocalyptic number.

It is an amenable number.

50500005421 is a deficient number, since it is larger than the sum of its proper divisors (1).

50500005421 is an equidigital number, since it uses as much as digits as its factorization.

50500005421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 22.

Adding to 50500005421 its reverse (12450000505), we get a palindrome (62950005926).

The spelling of 50500005421 in words is "fifty billion, five hundred million, five thousand, four hundred twenty-one".