144252181 has 2 divisors, whose sum is σ = 144252182. Its totient is φ = 144252180.

The previous prime is 144252149. The next prime is 144252187. The reversal of 144252181 is 181252441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144216081 + 36100 = 12009^2 + 190^2 .

It is an emirp because it is prime and its reverse (181252441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144252181 - 2⁵ = 144252149 is a prime.

It is a super-2 number, since 2×144252181² = 41617383446513522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144252187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72126090 + 72126091.

It is an arithmetic number, because the mean of its divisors is an integer number (72126091).

Almost surely, 2^144252181 is an apocalyptic number.

It is an amenable number.

144252181 is a deficient number, since it is larger than the sum of its proper divisors (1).

144252181 is an equidigital number, since it uses as much as digits as its factorization.

144252181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2560, while the sum is 28.

The square root of 144252181 is about 12010.5029453391. The cubic root of 144252181 is about 524.4540731741.

The spelling of 144252181 in words is "one hundred forty-four million, two hundred fifty-two thousand, one hundred eighty-one".