545643113 has 2 divisors, whose sum is σ = 545643114. Its totient is φ = 545643112.

The previous prime is 545643071. The next prime is 545643173. The reversal of 545643113 is 311346545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 534904384 + 10738729 = 23128^2 + 3277^2 .

It is a cyclic number.

It is not a de Polignac number, because 545643113 - 2²⁰ = 544594537 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545643113.

It is not a weakly prime, because it can be changed into another prime (545643173) by changing a digit.

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 as a sum of consecutive naturals, namely, 272821556 + 272821557.

It is an arithmetic number, because the mean of its divisors is an integer number (272821557).

Almost surely, 2^545643113 is an apocalyptic number.

It is an amenable number.

545643113 is a deficient number, since it is larger than the sum of its proper divisors (1).

545643113 is an equidigital number, since it uses as much as digits as its factorization.

545643113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 32.

The square root of 545643113 is about 23359.0049659655. The cubic root of 545643113 is about 817.1520840573.

Adding to 545643113 its reverse (311346545), we get a palindrome (856989658).

The spelling of 545643113 in words is "five hundred forty-five million, six hundred forty-three thousand, one hundred thirteen".