548557 has 2 divisors, whose sum is σ = 548558. Its totient is φ = 548556.

The previous prime is 548543. The next prime is 548567. The reversal of 548557 is 755845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538756 + 9801 = 734^2 + 99^2 .

It is a cyclic number.

It is not a de Polignac number, because 548557 - 2¹¹ = 546509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548567) 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 as a sum of consecutive naturals, namely, 274278 + 274279.

It is an arithmetic number, because the mean of its divisors is an integer number (274279).

2⁵⁴⁸⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

548557 is a deficient number, since it is larger than the sum of its proper divisors (1).

548557 is an equidigital number, since it uses as much as digits as its factorization.

548557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28000, while the sum is 34.

The square root of 548557 is about 740.6463393550. The cubic root of 548557 is about 81.8604109351.

The spelling of 548557 in words is "five hundred forty-eight thousand, five hundred fifty-seven".