144534581 has 2 divisors, whose sum is σ = 144534582. Its totient is φ = 144534580.

The previous prime is 144534569. The next prime is 144534583. The reversal of 144534581 is 185435441.

144534581 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., 136095556 + 8439025 = 11666^2 + 2905^2 .

It is an emirp because it is prime and its reverse (185435441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144534581 - 2¹⁴ = 144518197 is a prime.

It is a super-2 number, since 2×144534581² = 41780490209691122, which contains 22 as substring.

Together with 144534583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144534583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72267290 + 72267291.

It is an arithmetic number, because the mean of its divisors is an integer number (72267291).

Almost surely, 2^144534581 is an apocalyptic number.

It is an amenable number.

144534581 is a deficient number, since it is larger than the sum of its proper divisors (1).

144534581 is an equidigital number, since it uses as much as digits as its factorization.

144534581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38400, while the sum is 35.

The square root of 144534581 is about 12022.2535741017. The cubic root of 144534581 is about 524.7960883084.

The spelling of 144534581 in words is "one hundred forty-four million, five hundred thirty-four thousand, five hundred eighty-one".