548413981 has 2 divisors, whose sum is σ = 548413982. Its totient is φ = 548413980.

The previous prime is 548413969. The next prime is 548413993. The reversal of 548413981 is 189314845.

It is a balanced prime because it is at equal distance from previous prime (548413969) and next prime (548413993).

It can be written as a sum of positive squares in only one way, i.e., 341917081 + 206496900 = 18491^2 + 14370^2 .

It is a cyclic number.

It is not a de Polignac number, because 548413981 - 2⁹ = 548413469 is a prime.

It is a super-2 number, since 2×548413981² = 601515789112536722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548413781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274206990 + 274206991.

It is an arithmetic number, because the mean of its divisors is an integer number (274206991).

Almost surely, 2^548413981 is an apocalyptic number.

It is an amenable number.

548413981 is a deficient number, since it is larger than the sum of its proper divisors (1).

548413981 is an equidigital number, since it uses as much as digits as its factorization.

548413981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 43.

The square root of 548413981 is about 23418.2403480706. The cubic root of 548413981 is about 818.5329614019.

The spelling of 548413981 in words is "five hundred forty-eight million, four hundred thirteen thousand, nine hundred eighty-one".