144232261 has 2 divisors, whose sum is σ = 144232262. Its totient is φ = 144232260.

The previous prime is 144232259. The next prime is 144232273. The reversal of 144232261 is 162232441.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118679236 + 25553025 = 10894^2 + 5055^2 .

It is a cyclic number.

It is not a de Polignac number, because 144232261 - 2¹ = 144232259 is a prime.

It is a super-2 number, since 2×144232261² = 41605890226344242, which contains 22 as substring.

Together with 144232259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144232201) 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, 72116130 + 72116131.

It is an arithmetic number, because the mean of its divisors is an integer number (72116131).

Almost surely, 2^144232261 is an apocalyptic number.

It is an amenable number.

144232261 is a deficient number, since it is larger than the sum of its proper divisors (1).

144232261 is an equidigital number, since it uses as much as digits as its factorization.

144232261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 144232261 is about 12009.6736425267. The cubic root of 144232261 is about 524.4299311797.

The spelling of 144232261 in words is "one hundred forty-four million, two hundred thirty-two thousand, two hundred sixty-one".