49999851 has 12 divisors (see below), whose sum is σ = 78787800.
Its totient is φ = 30302880.
The previous prime is 49999847. The next prime is 49999853. The reversal of 49999851 is 15899994.
It is not a de Polignac number, because 49999851 - 22 = 49999847 is a prime.
It is not an unprimeable number, because it can be changed into a prime (49999853) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252426 + ... + 252623.
It is an arithmetic number, because the mean of its divisors is an integer number (6565650).
Almost surely, 249999851 is an apocalyptic number.
49999851 is a deficient number, since it is larger than the sum of its proper divisors (28787949).
49999851 is a wasteful number, since it uses less digits than its factorization.
49999851 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 505066 (or 505063 counting only the distinct ones).
The product of its digits is 1049760, while the sum is 54.
The square root of 49999851 is about 7071.0572759666.
The cubic root of 49999851 is about 368.4027839165.
The spelling of 49999851 in words is "forty-nine million, nine hundred ninety-nine thousand, eight hundred fifty-one".