545541641 has 2 divisors, whose sum is σ = 545541642. Its totient is φ = 545541640.

The previous prime is 545541599. The next prime is 545541691. The reversal of 545541641 is 146145545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475065616 + 70476025 = 21796^2 + 8395^2 .

It is a cyclic number.

It is not a de Polignac number, because 545541641 - 2²⁶ = 478432777 is a prime.

It is not a weakly prime, because it can be changed into another prime (545541691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272770820 + 272770821.

It is an arithmetic number, because the mean of its divisors is an integer number (272770821).

Almost surely, 2^545541641 is an apocalyptic number.

It is an amenable number.

545541641 is a deficient number, since it is larger than the sum of its proper divisors (1).

545541641 is an equidigital number, since it uses as much as digits as its factorization.

545541641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48000, while the sum is 35.

The square root of 545541641 is about 23356.8328546488. The cubic root of 545541641 is about 817.1014262831.

The spelling of 545541641 in words is "five hundred forty-five million, five hundred forty-one thousand, six hundred forty-one".