548180981 has 2 divisors, whose sum is σ = 548180982. Its totient is φ = 548180980.

The previous prime is 548180959. The next prime is 548180987. The reversal of 548180981 is 189081845.

548180981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 548028100 + 152881 = 23410^2 + 391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-548180981 is a prime.

It is a super-2 number, since 2×548180981² = 601004775860244722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548180987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274090490 + 274090491.

It is an arithmetic number, because the mean of its divisors is an integer number (274090491).

Almost surely, 2^548180981 is an apocalyptic number.

It is an amenable number.

548180981 is a deficient number, since it is larger than the sum of its proper divisors (1).

548180981 is an equidigital number, since it uses as much as digits as its factorization.

548180981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 44.

The square root of 548180981 is about 23413.2650649157. The cubic root of 548180981 is about 818.4170239273.

The spelling of 548180981 in words is "five hundred forty-eight million, one hundred eighty thousand, nine hundred eighty-one".