144613561 has 2 divisors, whose sum is σ = 144613562. Its totient is φ = 144613560.

The previous prime is 144613487. The next prime is 144613583. The reversal of 144613561 is 165316441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76650025 + 67963536 = 8755^2 + 8244^2 .

It is a cyclic number.

It is not a de Polignac number, because 144613561 - 2¹¹ = 144611513 is a prime.

It is not a weakly prime, because it can be changed into another prime (144613061) 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, 72306780 + 72306781.

It is an arithmetic number, because the mean of its divisors is an integer number (72306781).

Almost surely, 2^144613561 is an apocalyptic number.

It is an amenable number.

144613561 is a deficient number, since it is larger than the sum of its proper divisors (1).

144613561 is an equidigital number, since it uses as much as digits as its factorization.

144613561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 144613561 is about 12025.5378673887. The cubic root of 144613561 is about 524.8916613939.

The spelling of 144613561 in words is "one hundred forty-four million, six hundred thirteen thousand, five hundred sixty-one".