548857 has 4 divisors (see below), whose sum is σ = 550516. Its totient is φ = 547200.

The previous prime is 548851. The next prime is 548861. The reversal of 548857 is 758845.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 758845 = 5 ⋅151769.

It can be written as a sum of positive squares in 2 ways, for example, as 184041 + 364816 = 429^2 + 604^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-548857 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (548851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144 + ... + 1057.

It is an arithmetic number, because the mean of its divisors is an integer number (137629).

2⁵⁴⁸⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

548857 is a deficient number, since it is larger than the sum of its proper divisors (1659).

548857 is a wasteful number, since it uses less digits than its factorization.

548857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658.

The product of its digits is 44800, while the sum is 37.

The square root of 548857 is about 740.8488374831. The cubic root of 548857 is about 81.8753310788.

It can be divided in two parts, 54 and 8857, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 548857 in words is "five hundred forty-eight thousand, eight hundred fifty-seven".