49985851 has 4 divisors (see below), whose sum is σ = 50016304. Its totient is φ = 49955400.

The previous prime is 49985839. The next prime is 49985861. The reversal of 49985851 is 15858994.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49985851 - 2¹³ = 49977659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49985795 and 49985804.

It is not an unprimeable number, because it can be changed into a prime (49985861) 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 in 3 ways as a sum of consecutive naturals, for example, 12615 + ... + 16096.

It is an arithmetic number, because the mean of its divisors is an integer number (12504076).

Almost surely, 2^49985851 is an apocalyptic number.

49985851 is a deficient number, since it is larger than the sum of its proper divisors (30453).

49985851 is a wasteful number, since it uses less digits than its factorization.

49985851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30452.

The product of its digits is 518400, while the sum is 49.

The square root of 49985851 is about 7070.0672556914. The cubic root of 49985851 is about 368.3683963445.

The spelling of 49985851 in words is "forty-nine million, nine hundred eighty-five thousand, eight hundred fifty-one".