50383981 has 2 divisors, whose sum is σ = 50383982. Its totient is φ = 50383980.

The previous prime is 50383967. The next prime is 50383997. The reversal of 50383981 is 18938305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49928356 + 455625 = 7066^2 + 675^2 .

It is a cyclic number.

It is not a de Polignac number, because 50383981 - 2²¹ = 48286829 is a prime.

It is a super-2 number, since 2×50383981² = 5077091082816722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50383981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50383901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25191990 + 25191991.

It is an arithmetic number, because the mean of its divisors is an integer number (25191991).

Almost surely, 2^50383981 is an apocalyptic number.

It is an amenable number.

50383981 is a deficient number, since it is larger than the sum of its proper divisors (1).

50383981 is an equidigital number, since it uses as much as digits as its factorization.

50383981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 50383981 is about 7098.1674395579. The cubic root of 50383981 is about 369.3438113827.

The spelling of 50383981 in words is "fifty million, three hundred eighty-three thousand, nine hundred eighty-one".