548340565 has 4 divisors (see below), whose sum is σ = 658008684. Its totient is φ = 438672448.

The previous prime is 548340553. The next prime is 548340571. The reversal of 548340565 is 565043845.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565043845 = 5 ⋅113008769.

It can be written as a sum of positive squares in 2 ways, for example, as 435598641 + 112741924 = 20871^2 + 10618^2 .

It is a cyclic number.

It is not a de Polignac number, because 548340565 - 2⁹ = 548340053 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 54834052 + ... + 54834061.

It is an arithmetic number, because the mean of its divisors is an integer number (164502171).

Almost surely, 2^548340565 is an apocalyptic number.

It is an amenable number.

548340565 is a deficient number, since it is larger than the sum of its proper divisors (109668119).

548340565 is a wasteful number, since it uses less digits than its factorization.

548340565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109668118.

The product of its (nonzero) digits is 288000, while the sum is 40.

The square root of 548340565 is about 23416.6727995247. The cubic root of 548340565 is about 818.4964341920.

The spelling of 548340565 in words is "five hundred forty-eight million, three hundred forty thousand, five hundred sixty-five".