144555001 has 2 divisors, whose sum is σ = 144555002. Its totient is φ = 144555000.

The previous prime is 144554999. The next prime is 144555007. The reversal of 144555001 is 100555441.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141039376 + 3515625 = 11876^2 + 1875^2 .

It is a cyclic number.

It is not a de Polignac number, because 144555001 - 2¹ = 144554999 is a prime.

It is a super-2 number, since 2×144555001² = 41792296628220002, which contains 22 as substring.

Together with 144554999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (144555007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72277500 + 72277501.

It is an arithmetic number, because the mean of its divisors is an integer number (72277501).

Almost surely, 2^144555001 is an apocalyptic number.

It is an amenable number.

144555001 is a deficient number, since it is larger than the sum of its proper divisors (1).

144555001 is an equidigital number, since it uses as much as digits as its factorization.

144555001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 144555001 is about 12023.1028025215. The cubic root of 144555001 is about 524.8208017286.

The spelling of 144555001 in words is "one hundred forty-four million, five hundred fifty-five thousand, one".