144863261 has 2 divisors, whose sum is σ = 144863262. Its totient is φ = 144863260.

The previous prime is 144863233. The next prime is 144863267. The reversal of 144863261 is 162368441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81342361 + 63520900 = 9019^2 + 7970^2 .

It is a cyclic number.

It is not a de Polignac number, because 144863261 - 2⁶ = 144863197 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 (144863267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72431630 + 72431631.

It is an arithmetic number, because the mean of its divisors is an integer number (72431631).

Almost surely, 2^144863261 is an apocalyptic number.

It is an amenable number.

144863261 is a deficient number, since it is larger than the sum of its proper divisors (1).

144863261 is an equidigital number, since it uses as much as digits as its factorization.

144863261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 35.

The square root of 144863261 is about 12035.9154616506. The cubic root of 144863261 is about 525.1935927011.

The spelling of 144863261 in words is "one hundred forty-four million, eight hundred sixty-three thousand, two hundred sixty-one".