49856121 has 64 divisors (see below), whose sum is σ = 91238400. Its totient is φ = 26258688.

The previous prime is 49856119. The next prime is 49856159. The reversal of 49856121 is 12165894.

49856121 is a `hidden beast` number, since 4 + 98 + 561 + 2 + 1 = 666.

It is not a de Polignac number, because 49856121 - 2¹ = 49856119 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49856621) 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 63 ways as a sum of consecutive naturals, for example, 189436 + ... + 189698.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 2^49856121 is an apocalyptic number.

It is an amenable number.

49856121 is a deficient number, since it is larger than the sum of its proper divisors (41382279).

49856121 is a wasteful number, since it uses less digits than its factorization.

49856121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 349 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 49856121 is about 7060.8867006914. The cubic root of 49856121 is about 368.0494405258.

The spelling of 49856121 in words is "forty-nine million, eight hundred fifty-six thousand, one hundred twenty-one".