54857 has 4 divisors (see below), whose sum is σ = 59856. Its totient is φ = 49860.

The previous prime is 54851. The next prime is 54869. The reversal of 54857 is 75845.

54857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54857 - 2⁸ = 54601 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (54851) 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, 2483 + ... + 2504.

It is an arithmetic number, because the mean of its divisors is an integer number (14964).

2⁵⁴⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

54857 is a deficient number, since it is larger than the sum of its proper divisors (4999).

54857 is a wasteful number, since it uses less digits than its factorization.

54857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4998.

The product of its digits is 5600, while the sum is 29.

The square root of 54857 is about 234.2157125387. The cubic root of 54857 is about 37.9965370806.

The spelling of 54857 in words is "fifty-four thousand, eight hundred fifty-seven".