144422561 has 2 divisors, whose sum is σ = 144422562. Its totient is φ = 144422560.

The previous prime is 144422539. The next prime is 144422567. The reversal of 144422561 is 165224441.

144422561 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., 88830625 + 55591936 = 9425^2 + 7456^2 .

It is a cyclic number.

It is not a de Polignac number, because 144422561 - 2¹⁸ = 144160417 is a prime.

It is a super-2 number, since 2×144422561² = 41715752251597442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144422567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72211280 + 72211281.

It is an arithmetic number, because the mean of its divisors is an integer number (72211281).

Almost surely, 2^144422561 is an apocalyptic number.

It is an amenable number.

144422561 is a deficient number, since it is larger than the sum of its proper divisors (1).

144422561 is an equidigital number, since it uses as much as digits as its factorization.

144422561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 29.

The square root of 144422561 is about 12017.5938107426. The cubic root of 144422561 is about 524.6604740456.

The spelling of 144422561 in words is "one hundred forty-four million, four hundred twenty-two thousand, five hundred sixty-one".