49581000173 has 2 divisors, whose sum is σ = 49581000174. Its totient is φ = 49581000172.

The previous prime is 49581000151. The next prime is 49581000197. The reversal of 49581000173 is 37100018594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49187255524 + 393744649 = 221782^2 + 19843^2 .

It is a cyclic number.

It is not a de Polignac number, because 49581000173 - 2¹⁴ = 49580983789 is a prime.

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 (49581000113) 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, 24790500086 + 24790500087.

It is an arithmetic number, because the mean of its divisors is an integer number (24790500087).

Almost surely, 2^49581000173 is an apocalyptic number.

It is an amenable number.

49581000173 is a deficient number, since it is larger than the sum of its proper divisors (1).

49581000173 is an equidigital number, since it uses as much as digits as its factorization.

49581000173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 49581000173 in words is "forty-nine billion, five hundred eighty-one million, one hundred seventy-three", and thus it is an aban number.