545145193 has 2 divisors, whose sum is σ = 545145194. Its totient is φ = 545145192.

The previous prime is 545145179. The next prime is 545145221. The reversal of 545145193 is 391541545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298874944 + 246270249 = 17288^2 + 15693^2 .

It is a cyclic number.

It is not a de Polignac number, because 545145193 - 2²¹ = 543048041 is a prime.

It is equal to p_28603918 and since 545145193 and 28603918 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (545145163) 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, 272572596 + 272572597.

It is an arithmetic number, because the mean of its divisors is an integer number (272572597).

Almost surely, 2^545145193 is an apocalyptic number.

It is an amenable number.

545145193 is a deficient number, since it is larger than the sum of its proper divisors (1).

545145193 is an equidigital number, since it uses as much as digits as its factorization.

545145193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 37.

The square root of 545145193 is about 23348.3445451706. The cubic root of 545145193 is about 816.9034476732.

The spelling of 545145193 in words is "five hundred forty-five million, one hundred forty-five thousand, one hundred ninety-three".