548892781 has 2 divisors, whose sum is σ = 548892782. Its totient is φ = 548892780.

The previous prime is 548892749. The next prime is 548892793. The reversal of 548892781 is 187298845.

It is a happy number.

548892781 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., 469415556 + 79477225 = 21666^2 + 8915^2 .

It is a cyclic number.

It is not a de Polignac number, because 548892781 - 2⁵ = 548892749 is a prime.

It is a super-2 number, since 2×548892781² = 602566570067827922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548892731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274446390 + 274446391.

It is an arithmetic number, because the mean of its divisors is an integer number (274446391).

Almost surely, 2^548892781 is an apocalyptic number.

It is an amenable number.

548892781 is a deficient number, since it is larger than the sum of its proper divisors (1).

548892781 is an equidigital number, since it uses as much as digits as its factorization.

548892781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 52.

The square root of 548892781 is about 23428.4609182934. The cubic root of 548892781 is about 818.7711024144.

The spelling of 548892781 in words is "five hundred forty-eight million, eight hundred ninety-two thousand, seven hundred eighty-one".