54099985 has 16 divisors (see below), whose sum is σ = 66759120. Its totient is φ = 42071040.

The previous prime is 54099959. The next prime is 54099989. The reversal of 54099985 is 58999045.

It can be written as a sum of positive squares in 8 ways, for example, as 8928144 + 45171841 = 2988^2 + 6721^2 .

It is not a de Polignac number, because 54099985 - 2⁵ = 54099953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54099989) 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, 26149 + ... + 28141.

It is an arithmetic number, because the mean of its divisors is an integer number (4172445).

Almost surely, 2^54099985 is an apocalyptic number.

It is an amenable number.

54099985 is a deficient number, since it is larger than the sum of its proper divisors (12659135).

54099985 is a wasteful number, since it uses less digits than its factorization.

54099985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148.

The product of its (nonzero) digits is 583200, while the sum is 49.

The square root of 54099985 is about 7355.2691996962. The cubic root of 54099985 is about 378.2094548508.

The spelling of 54099985 in words is "fifty-four million, ninety-nine thousand, nine hundred eighty-five".