548442149 has 2 divisors, whose sum is σ = 548442150. Its totient is φ = 548442148.

The previous prime is 548442137. The next prime is 548442197. The reversal of 548442149 is 941244845.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516880225 + 31561924 = 22735^2 + 5618^2 .

It is a cyclic number.

It is not a de Polignac number, because 548442149 - 2²⁸ = 280006693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548442949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274221074 + 274221075.

It is an arithmetic number, because the mean of its divisors is an integer number (274221075).

Almost surely, 2^548442149 is an apocalyptic number.

It is an amenable number.

548442149 is a deficient number, since it is larger than the sum of its proper divisors (1).

548442149 is an equidigital number, since it uses as much as digits as its factorization.

548442149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 41.

The square root of 548442149 is about 23418.8417518886. The cubic root of 548442149 is about 818.5469751716.

The spelling of 548442149 in words is "five hundred forty-eight million, four hundred forty-two thousand, one hundred forty-nine".