144622237 has 2 divisors, whose sum is σ = 144622238. Its totient is φ = 144622236.

The previous prime is 144622193. The next prime is 144622249. The reversal of 144622237 is 732226441.

It is a happy number.

144622237 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., 141276996 + 3345241 = 11886^2 + 1829^2 .

It is an emirp because it is prime and its reverse (732226441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144622237 - 2⁷ = 144622109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144622199 and 144622208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144622267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72311118 + 72311119.

It is an arithmetic number, because the mean of its divisors is an integer number (72311119).

Almost surely, 2^144622237 is an apocalyptic number.

It is an amenable number.

144622237 is a deficient number, since it is larger than the sum of its proper divisors (1).

144622237 is an equidigital number, since it uses as much as digits as its factorization.

144622237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

The square root of 144622237 is about 12025.8985942839. The cubic root of 144622237 is about 524.9021580328.

Adding to 144622237 its reverse (732226441), we get a palindrome (876848678).

The spelling of 144622237 in words is "one hundred forty-four million, six hundred twenty-two thousand, two hundred thirty-seven".