54999 has 20 divisors (see below), whose sum is σ = 94864. Its totient is φ = 31104.

The previous prime is 54983. The next prime is 55001. The reversal of 54999 is 99945.

It is not a de Polignac number, because 54999 - 2⁴ = 54983 is a prime.

54999 is a modest number, since divided by 999 gives 54 as remainder.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 54999.

It is not an unprimeable number, because it can be changed into a prime (54919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 519 + ... + 615.

2⁵⁴⁹⁹⁹ is an apocalyptic number.

54999 is a deficient number, since it is larger than the sum of its proper divisors (39865).

54999 is an equidigital number, since it uses as much as digits as its factorization.

54999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 107 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 54999 is about 234.5186559743. The cubic root of 54999 is about 38.0292941242.

The spelling of 54999 in words is "fifty-four thousand, nine hundred ninety-nine".