545161 has 2 divisors, whose sum is σ = 545162. Its totient is φ = 545160.

The previous prime is 545143. The next prime is 545189. The reversal of 545161 is 161545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435600 + 109561 = 660^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 545161 - 2⁷ = 545033 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272580 + 272581.

It is an arithmetic number, because the mean of its divisors is an integer number (272581).

2⁵⁴⁵¹⁶¹ is an apocalyptic number.

It is an amenable number.

545161 is a deficient number, since it is larger than the sum of its proper divisors (1).

545161 is an equidigital number, since it uses as much as digits as its factorization.

545161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 22.

The square root of 545161 is about 738.3501879190. The cubic root of 545161 is about 81.6911343226.

The spelling of 545161 in words is "five hundred forty-five thousand, one hundred sixty-one".