50981421 has 12 divisors (see below), whose sum is σ = 69122976. Its totient is φ = 33423120.

The previous prime is 50981321. The next prime is 50981423. The reversal of 50981421 is 12418905.

It is a happy number.

50981421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50981421 - 2¹¹ = 50979373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50981423) 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 11 ways as a sum of consecutive naturals, for example, 8880 + ... + 13446.

It is an arithmetic number, because the mean of its divisors is an integer number (5760248).

Almost surely, 2^50981421 is an apocalyptic number.

It is an amenable number.

50981421 is a deficient number, since it is larger than the sum of its proper divisors (18141555).

50981421 is an equidigital number, since it uses as much as digits as its factorization.

50981421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692 (or 4631 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 50981421 is about 7140.1275198697. The cubic root of 50981421 is about 370.7979394855.

The spelling of 50981421 in words is "fifty million, nine hundred eighty-one thousand, four hundred twenty-one".