49138559 has 2 divisors, whose sum is σ = 49138560. Its totient is φ = 49138558.

The previous prime is 49138549. The next prime is 49138567. The reversal of 49138559 is 95583194.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49138559 - 2⁸ = 49138303 is a 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 (49138549) 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, 24569279 + 24569280.

It is an arithmetic number, because the mean of its divisors is an integer number (24569280).

Almost surely, 2^49138559 is an apocalyptic number.

49138559 is a deficient number, since it is larger than the sum of its proper divisors (1).

49138559 is an equidigital number, since it uses as much as digits as its factorization.

49138559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 44.

The square root of 49138559 is about 7009.8900847303. The cubic root of 49138559 is about 366.2751645901.

The spelling of 49138559 in words is "forty-nine million, one hundred thirty-eight thousand, five hundred fifty-nine".