49991159 has 2 divisors, whose sum is σ = 49991160. Its totient is φ = 49991158.

The previous prime is 49991143. The next prime is 49991173. The reversal of 49991159 is 95119994.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49991159 - 2⁴ = 49991143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49996159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24995579 + 24995580.

It is an arithmetic number, because the mean of its divisors is an integer number (24995580).

Almost surely, 2^49991159 is an apocalyptic number.

49991159 is a deficient number, since it is larger than the sum of its proper divisors (1).

49991159 is an equidigital number, since it uses as much as digits as its factorization.

49991159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 47.

The square root of 49991159 is about 7070.4426311229. The cubic root of 49991159 is about 368.3814349025.

The spelling of 49991159 in words is "forty-nine million, nine hundred ninety-one thousand, one hundred fifty-nine".