548172138 has 8 divisors (see below), whose sum is σ = 1096344288. Its totient is φ = 182724044.

The previous prime is 548172137. The next prime is 548172143. The reversal of 548172138 is 831271845.

It is a sphenic number, since it is the product of 3 distinct primes.

548172138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 548172096 and 548172105.

It is not an unprimeable number, because it can be changed into a prime (548172137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45681006 + ... + 45681017.

It is an arithmetic number, because the mean of its divisors is an integer number (137043036).

Almost surely, 2^548172138 is an apocalyptic number.

548172138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

548172138 is a wasteful number, since it uses less digits than its factorization.

548172138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91362028.

The product of its digits is 53760, while the sum is 39.

The square root of 548172138 is about 23413.0762182162. The cubic root of 548172138 is about 818.4126231296.

The spelling of 548172138 in words is "five hundred forty-eight million, one hundred seventy-two thousand, one hundred thirty-eight".