144593261 has 2 divisors, whose sum is σ = 144593262. Its totient is φ = 144593260.

The previous prime is 144593243. The next prime is 144593263. The reversal of 144593261 is 162395441.

144593261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144456361 + 136900 = 12019^2 + 370^2 .

It is a cyclic number.

It is not a de Polignac number, because 144593261 - 2²⁶ = 77484397 is a prime.

It is a super-2 number, since 2×144593261² = 41814422253228242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 144593263, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144593263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72296630 + 72296631.

It is an arithmetic number, because the mean of its divisors is an integer number (72296631).

Almost surely, 2^144593261 is an apocalyptic number.

It is an amenable number.

144593261 is a deficient number, since it is larger than the sum of its proper divisors (1).

144593261 is an equidigital number, since it uses as much as digits as its factorization.

144593261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 144593261 is about 12024.6938006753. The cubic root of 144593261 is about 524.8670998446.

The spelling of 144593261 in words is "one hundred forty-four million, five hundred ninety-three thousand, two hundred sixty-one".