548871181 has 2 divisors, whose sum is σ = 548871182. Its totient is φ = 548871180.

The previous prime is 548871137. The next prime is 548871199. The reversal of 548871181 is 181178845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 528540100 + 20331081 = 22990^2 + 4509^2 .

It is a cyclic number.

It is not a de Polignac number, because 548871181 - 2⁷ = 548871053 is a prime.

It is a super-2 number, since 2×548871181² = 602519146664669522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548871131) 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 as a sum of consecutive naturals, namely, 274435590 + 274435591.

It is an arithmetic number, because the mean of its divisors is an integer number (274435591).

Almost surely, 2^548871181 is an apocalyptic number.

It is an amenable number.

548871181 is a deficient number, since it is larger than the sum of its proper divisors (1).

548871181 is an equidigital number, since it uses as much as digits as its factorization.

548871181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 43.

The square root of 548871181 is about 23427.9999359740. Note that the first 4 decimals coincide. The cubic root of 548871181 is about 818.7603621943.

The spelling of 548871181 in words is "five hundred forty-eight million, eight hundred seventy-one thousand, one hundred eighty-one".