544242661 has 4 divisors (see below), whose sum is σ = 544293324. Its totient is φ = 544192000.

The previous prime is 544242659. The next prime is 544242679. The reversal of 544242661 is 166242445.

544242661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 166242445 = 5 ⋅33248489.

It can be written as a sum of positive squares in 2 ways, for example, as 208253761 + 335988900 = 14431^2 + 18330^2 .

It is a cyclic number.

It is not a de Polignac number, because 544242661 - 2¹ = 544242659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544242961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140 + ... + 33061.

It is an arithmetic number, because the mean of its divisors is an integer number (136073331).

Almost surely, 2^544242661 is an apocalyptic number.

It is an amenable number.

544242661 is a deficient number, since it is larger than the sum of its proper divisors (50663).

544242661 is a wasteful number, since it uses less digits than its factorization.

544242661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50662.

The product of its digits is 46080, while the sum is 34.

The square root of 544242661 is about 23329.0090016700. The cubic root of 544242661 is about 816.4523820593.

The spelling of 544242661 in words is "five hundred forty-four million, two hundred forty-two thousand, six hundred sixty-one".