545240641 has 6 divisors (see below), whose sum is σ = 599314226. Its totient is φ = 495673200.

The previous prime is 545240639. The next prime is 545240651. The reversal of 545240641 is 146042545.

It is a happy number.

545240641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 286963600 + 258277041 = 16940^2 + 16071^2 .

It is not a de Polignac number, because 545240641 - 2¹ = 545240639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545240651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2252940 + ... + 2253181.

Almost surely, 2^545240641 is an apocalyptic number.

It is an amenable number.

545240641 is a deficient number, since it is larger than the sum of its proper divisors (54073585).

545240641 is a wasteful number, since it uses less digits than its factorization.

545240641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506143 (or 4506132 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 545240641 is about 23350.3884550129. The cubic root of 545240641 is about 816.9511213640.

The spelling of 545240641 in words is "five hundred forty-five million, two hundred forty thousand, six hundred forty-one".