54171945 has 48 divisors (see below), whose sum is σ = 104682240. Its totient is φ = 25754112.

The previous prime is 54171937. The next prime is 54171991. The reversal of 54171945 is 54917145.

54171945 is a `hidden beast` number, since 541 + 71 + 9 + 45 = 666.

54171945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54171945 - 2³ = 54171937 is a prime.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 12672 + ... + 16398.

It is an arithmetic number, because the mean of its divisors is an integer number (2180880).

Almost surely, 2^54171945 is an apocalyptic number.

It is an amenable number.

54171945 is a deficient number, since it is larger than the sum of its proper divisors (50510295).

54171945 is a wasteful number, since it uses less digits than its factorization.

54171945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774 (or 3771 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 54171945 is about 7360.1593053412. The cubic root of 54171945 is about 378.3770697732.

The spelling of 54171945 in words is "fifty-four million, one hundred seventy-one thousand, nine hundred forty-five".