50971181 has 2 divisors, whose sum is σ = 50971182. Its totient is φ = 50971180.

The previous prime is 50971169. The next prime is 50971187. The reversal of 50971181 is 18117905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50282281 + 688900 = 7091^2 + 830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50971181 is a prime.

It is a super-2 number, since 2×50971181² = 5196122585069522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50971187) 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, 25485590 + 25485591.

It is an arithmetic number, because the mean of its divisors is an integer number (25485591).

Almost surely, 2^50971181 is an apocalyptic number.

It is an amenable number.

50971181 is a deficient number, since it is larger than the sum of its proper divisors (1).

50971181 is an equidigital number, since it uses as much as digits as its factorization.

50971181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 50971181 is about 7139.4104098308. The cubic root of 50971181 is about 370.7731119760.

The spelling of 50971181 in words is "fifty million, nine hundred seventy-one thousand, one hundred eighty-one".