49981173 has 48 divisors (see below), whose sum is σ = 80388288. Its totient is φ = 27289600.

The previous prime is 49981171. The next prime is 49981199. The reversal of 49981173 is 37118994.

It is a happy number.

It is not a de Polignac number, because 49981173 - 2¹ = 49981171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49981171) 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 47 ways as a sum of consecutive naturals, for example, 943015 + ... + 943067.

It is an arithmetic number, because the mean of its divisors is an integer number (1674756).

Almost surely, 2^49981173 is an apocalyptic number.

It is an amenable number.

49981173 is a deficient number, since it is larger than the sum of its proper divisors (30407115).

49981173 is a wasteful number, since it uses less digits than its factorization.

49981173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 125 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The square root of 49981173 is about 7069.7364165858. The cubic root of 49981173 is about 368.3569045518.

The spelling of 49981173 in words is "forty-nine million, nine hundred eighty-one thousand, one hundred seventy-three".