548861 has 2 divisors, whose sum is σ = 548862. Its totient is φ = 548860.

The previous prime is 548851. The next prime is 548869. The reversal of 548861 is 168845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 511225 + 37636 = 715^2 + 194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-548861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274430 + 274431.

It is an arithmetic number, because the mean of its divisors is an integer number (274431).

2⁵⁴⁸⁸⁶¹ is an apocalyptic number.

It is an amenable number.

548861 is a deficient number, since it is larger than the sum of its proper divisors (1).

548861 is an equidigital number, since it uses as much as digits as its factorization.

548861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 32.

The square root of 548861 is about 740.8515370842. The cubic root of 548861 is about 81.8755299773.

The spelling of 548861 in words is "five hundred forty-eight thousand, eight hundred sixty-one".