49881249 has 12 divisors (see below), whose sum is σ = 78600912. Its totient is φ = 30231000.

The previous prime is 49881239. The next prime is 49881253. The reversal of 49881249 is 94218894.

It is not a de Polignac number, because 49881249 - 2⁴ = 49881233 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49881229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251827 + ... + 252024.

It is an arithmetic number, because the mean of its divisors is an integer number (6550076).

Almost surely, 2^49881249 is an apocalyptic number.

It is an amenable number.

49881249 is a deficient number, since it is larger than the sum of its proper divisors (28719663).

49881249 is a wasteful number, since it uses less digits than its factorization.

49881249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503868 (or 503865 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 49881249 is about 7062.6658564596. The cubic root of 49881249 is about 368.1112637138. Note that the first 3 decimals are identical.

The spelling of 49881249 in words is "forty-nine million, eight hundred eighty-one thousand, two hundred forty-nine".