54168891 has 16 divisors (see below), whose sum is σ = 82718208. Its totient is φ = 30888000.

The previous prime is 54168889. The next prime is 54168911. The reversal of 54168891 is 19886145.

It is not a de Polignac number, because 54168891 - 2¹ = 54168889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54168091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8466 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (5169888).

Almost surely, 2^54168891 is an apocalyptic number.

54168891 is a deficient number, since it is larger than the sum of its proper divisors (28549317).

54168891 is a wasteful number, since it uses less digits than its factorization.

54168891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5482.

The product of its digits is 69120, while the sum is 42.

The square root of 54168891 is about 7359.9518340815. The cubic root of 54168891 is about 378.3699591721.

The spelling of 54168891 in words is "fifty-four million, one hundred sixty-eight thousand, eight hundred ninety-one".