50203981 has 2 divisors, whose sum is σ = 50203982. Its totient is φ = 50203980.

The previous prime is 50203939. The next prime is 50204039. The reversal of 50203981 is 18930205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49928356 + 275625 = 7066^2 + 525^2 .

It is a cyclic number.

It is not a de Polignac number, because 50203981 - 2⁹ = 50203469 is a prime.

It is a super-2 number, since 2×50203981² = 5040879416496722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50203081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25101990 + 25101991.

It is an arithmetic number, because the mean of its divisors is an integer number (25101991).

Almost surely, 2^50203981 is an apocalyptic number.

It is an amenable number.

50203981 is a deficient number, since it is larger than the sum of its proper divisors (1).

50203981 is an equidigital number, since it uses as much as digits as its factorization.

50203981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 50203981 is about 7085.4767658923. The cubic root of 50203981 is about 368.9034517518.

The spelling of 50203981 in words is "fifty million, two hundred three thousand, nine hundred eighty-one".