49831181 has 2 divisors, whose sum is σ = 49831182. Its totient is φ = 49831180.

The previous prime is 49831169. The next prime is 49831211. The reversal of 49831181 is 18113894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49477156 + 354025 = 7034^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 49831181 - 2¹⁴ = 49814797 is a prime.

It is a super-2 number, since 2×49831181² = 4966293199709522, which contains 22 as substring.

It is a Sophie Germain 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 (49831151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24915590 + 24915591.

It is an arithmetic number, because the mean of its divisors is an integer number (24915591).

Almost surely, 2^49831181 is an apocalyptic number.

It is an amenable number.

49831181 is a deficient number, since it is larger than the sum of its proper divisors (1).

49831181 is an equidigital number, since it uses as much as digits as its factorization.

49831181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 35.

The square root of 49831181 is about 7059.1204126293. The cubic root of 49831181 is about 367.9880593361.

The spelling of 49831181 in words is "forty-nine million, eight hundred thirty-one thousand, one hundred eighty-one".