50738981 has 2 divisors, whose sum is σ = 50738982. Its totient is φ = 50738980.

The previous prime is 50738977. The next prime is 50739019. The reversal of 50738981 is 18983705.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49126081 + 1612900 = 7009^2 + 1270^2 .

It is a cyclic number.

It is not a de Polignac number, because 50738981 - 2² = 50738977 is a prime.

It is a super-2 number, since 2×50738981² = 5148888385836722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50738381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25369490 + 25369491.

It is an arithmetic number, because the mean of its divisors is an integer number (25369491).

Almost surely, 2^50738981 is an apocalyptic number.

It is an amenable number.

50738981 is a deficient number, since it is larger than the sum of its proper divisors (1).

50738981 is an equidigital number, since it uses as much as digits as its factorization.

50738981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 50738981 is about 7123.1300002176. The cubic root of 50738981 is about 370.2092339818.

The spelling of 50738981 in words is "fifty million, seven hundred thirty-eight thousand, nine hundred eighty-one".