49135181 has 2 divisors, whose sum is σ = 49135182. Its totient is φ = 49135180.

The previous prime is 49135169. The next prime is 49135211. The reversal of 49135181 is 18153194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46104100 + 3031081 = 6790^2 + 1741^2 .

It is a cyclic number.

It is not a de Polignac number, because 49135181 - 2¹⁰ = 49134157 is a prime.

It is a super-2 number, since 2×49135181² = 4828532023805522, 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 (49135381) 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, 24567590 + 24567591.

It is an arithmetic number, because the mean of its divisors is an integer number (24567591).

Almost surely, 2^49135181 is an apocalyptic number.

It is an amenable number.

49135181 is a deficient number, since it is larger than the sum of its proper divisors (1).

49135181 is an equidigital number, since it uses as much as digits as its factorization.

49135181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 32.

The square root of 49135181 is about 7009.6491352991. The cubic root of 49135181 is about 366.2667712775.

The spelling of 49135181 in words is "forty-nine million, one hundred thirty-five thousand, one hundred eighty-one".