49981271 has 2 divisors, whose sum is σ = 49981272. Its totient is φ = 49981270.

The previous prime is 49981259. The next prime is 49981301. The reversal of 49981271 is 17218994.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49981271 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49981171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24990635 + 24990636.

It is an arithmetic number, because the mean of its divisors is an integer number (24990636).

Almost surely, 2^49981271 is an apocalyptic number.

49981271 is a deficient number, since it is larger than the sum of its proper divisors (1).

49981271 is an equidigital number, since it uses as much as digits as its factorization.

49981271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 41.

The square root of 49981271 is about 7069.7433475339. The cubic root of 49981271 is about 368.3571453021.

The spelling of 49981271 in words is "forty-nine million, nine hundred eighty-one thousand, two hundred seventy-one".