49959181 has 2 divisors, whose sum is σ = 49959182. Its totient is φ = 49959180.

The previous prime is 49959179. The next prime is 49959187. The reversal of 49959181 is 18195994.

49959181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44342281 + 5616900 = 6659^2 + 2370^2 .

It is a cyclic number.

It is not a de Polignac number, because 49959181 - 2¹ = 49959179 is a prime.

It is a super-2 number, since 2×49959181² = 4991839532381522, which contains 22 as substring.

Together with 49959179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49959187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24979590 + 24979591.

It is an arithmetic number, because the mean of its divisors is an integer number (24979591).

Almost surely, 2^49959181 is an apocalyptic number.

It is an amenable number.

49959181 is a deficient number, since it is larger than the sum of its proper divisors (1).

49959181 is an equidigital number, since it uses as much as digits as its factorization.

49959181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 46.

The square root of 49959181 is about 7068.1808833674. The cubic root of 49959181 is about 368.3028702492.

The spelling of 49959181 in words is "forty-nine million, nine hundred fifty-nine thousand, one hundred eighty-one".