49998171 has 4 divisors (see below), whose sum is σ = 66664232. Its totient is φ = 33332112.

The previous prime is 49998167. The next prime is 49998181. The reversal of 49998171 is 17189994.

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

It is not a de Polignac number, because 49998171 - 2² = 49998167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49998171.

It is not an unprimeable number, because it can be changed into a prime (49998181) 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, 8333026 + ... + 8333031.

It is an arithmetic number, because the mean of its divisors is an integer number (16666058).

Almost surely, 2^49998171 is an apocalyptic number.

49998171 is a deficient number, since it is larger than the sum of its proper divisors (16666061).

49998171 is a wasteful number, since it uses less digits than its factorization.

49998171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16666060.

The product of its digits is 163296, while the sum is 48.

The square root of 49998171 is about 7070.9384808525. The cubic root of 49998171 is about 368.3986577469.

The spelling of 49998171 in words is "forty-nine million, nine hundred ninety-eight thousand, one hundred seventy-one".