144545161 has 2 divisors, whose sum is σ = 144545162. Its totient is φ = 144545160.

The previous prime is 144545143. The next prime is 144545209. The reversal of 144545161 is 161545441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123210000 + 21335161 = 11100^2 + 4619^2 .

It is a cyclic number.

It is not a de Polignac number, because 144545161 - 2⁵ = 144545129 is a prime.

It is not a weakly prime, because it can be changed into another prime (144545461) 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, 72272580 + 72272581.

It is an arithmetic number, because the mean of its divisors is an integer number (72272581).

Almost surely, 2^144545161 is an apocalyptic number.

It is an amenable number.

144545161 is a deficient number, since it is larger than the sum of its proper divisors (1).

144545161 is an equidigital number, since it uses as much as digits as its factorization.

144545161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 31.

The square root of 144545161 is about 12022.6935833864. The cubic root of 144545161 is about 524.8088931036.

The spelling of 144545161 in words is "one hundred forty-four million, five hundred forty-five thousand, one hundred sixty-one".