49840081 has 2 divisors, whose sum is σ = 49840082. Its totient is φ = 49840080.

The previous prime is 49840019. The next prime is 49840151. The reversal of 49840081 is 18004894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38950081 + 10890000 = 6241^2 + 3300^2 .

It is a cyclic number.

It is not a de Polignac number, because 49840081 - 2²⁵ = 16285649 is a prime.

It is a super-2 number, since 2×49840081² = 4968067348173122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49843081) 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, 24920040 + 24920041.

It is an arithmetic number, because the mean of its divisors is an integer number (24920041).

Almost surely, 2^49840081 is an apocalyptic number.

It is an amenable number.

49840081 is a deficient number, since it is larger than the sum of its proper divisors (1).

49840081 is an equidigital number, since it uses as much as digits as its factorization.

49840081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 49840081 is about 7059.7507746379. The cubic root of 49840081 is about 368.0099659596.

The spelling of 49840081 in words is "forty-nine million, eight hundred forty thousand, eighty-one".