4857 has 4 divisors (see below), whose sum is σ = 6480. Its totient is φ = 3236.

The previous prime is 4831. The next prime is 4861. The reversal of 4857 is 7584.

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 4857 - 2⁶ = 4793 is a prime.

It is a D-number.

It is a plaindrome in base 14 and base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 4857.

It is not an unprimeable number, because it can be changed into a prime (4817) 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, 807 + ... + 812.

It is an arithmetic number, because the mean of its divisors is an integer number (1620).

2⁴⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

4857 is a deficient number, since it is larger than the sum of its proper divisors (1623).

4857 is a wasteful number, since it uses less digits than its factorization.

4857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622.

The product of its digits is 1120, while the sum is 24.

The square root of 4857 is about 69.6921803361. The cubic root of 4857 is about 16.9351624838.

It can be divided in two parts, 48 and 57, that added together give a triangular number (105 = T₁₄).

The spelling of 4857 in words is "four thousand, eight hundred fifty-seven".