57999 has 4 divisors (see below), whose sum is σ = 77336. Its totient is φ = 38664.

The previous prime is 57991. The next prime is 58013. The reversal of 57999 is 99975.

57999 = T₁₀₉ + T₁₁₀ + ... + T₁₁₇.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 57999 - 2³ = 57991 is a prime.

It is a D-number.

It is a Duffinian number.

57999 is a modest number, since divided by 999 gives 57 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9664 + ... + 9669.

It is an arithmetic number, because the mean of its divisors is an integer number (19334).

2⁵⁷⁹⁹⁹ is an apocalyptic number.

57999 is a deficient number, since it is larger than the sum of its proper divisors (19337).

57999 is a wasteful number, since it uses less digits than its factorization.

57999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19336.

The product of its digits is 25515, while the sum is 39.

The square root of 57999 is about 240.8298154299. The cubic root of 57999 is about 38.7085439408.

The spelling of 57999 in words is "fifty-seven thousand, nine hundred ninety-nine".