545328961 has 2 divisors, whose sum is σ = 545328962. Its totient is φ = 545328960.

The previous prime is 545328947. The next prime is 545328989. The reversal of 545328961 is 169823545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 536802561 + 8526400 = 23169^2 + 2920^2 .

It is a cyclic number.

It is not a de Polignac number, because 545328961 - 2⁹ = 545328449 is a prime.

It is not a weakly prime, because it can be changed into another prime (545328991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272664480 + 272664481.

It is an arithmetic number, because the mean of its divisors is an integer number (272664481).

Almost surely, 2^545328961 is an apocalyptic number.

It is an amenable number.

545328961 is a deficient number, since it is larger than the sum of its proper divisors (1).

545328961 is an equidigital number, since it uses as much as digits as its factorization.

545328961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 43.

The square root of 545328961 is about 23352.2795675283. The cubic root of 545328961 is about 816.9952298561.

The spelling of 545328961 in words is "five hundred forty-five million, three hundred twenty-eight thousand, nine hundred sixty-one".