50453981 has 2 divisors, whose sum is σ = 50453982. Its totient is φ = 50453980.

The previous prime is 50453971. The next prime is 50454017. The reversal of 50453981 is 18935405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49928356 + 525625 = 7066^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 50453981 - 2²² = 46259677 is a prime.

It is a super-2 number, since 2×50453981² = 5091208397496722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50453971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25226990 + 25226991.

It is an arithmetic number, because the mean of its divisors is an integer number (25226991).

Almost surely, 2^50453981 is an apocalyptic number.

It is an amenable number.

50453981 is a deficient number, since it is larger than the sum of its proper divisors (1).

50453981 is an equidigital number, since it uses as much as digits as its factorization.

50453981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 50453981 is about 7103.0965782537. The cubic root of 50453981 is about 369.5147791005.

The spelling of 50453981 in words is "fifty million, four hundred fifty-three thousand, nine hundred eighty-one".