144531001 has 4 divisors (see below), whose sum is σ = 144580212. Its totient is φ = 144481792.

The previous prime is 144530989. The next prime is 144531007. The reversal of 144531001 is 100135441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100135441 = 7 ⋅14305063.

It can be written as a sum of positive squares in 2 ways, for example, as 134444025 + 10086976 = 11595^2 + 3176^2 .

It is a cyclic number.

It is not a de Polignac number, because 144531001 - 2²¹ = 142433849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144531001.

It is not an unprimeable number, because it can be changed into a prime (144531007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19900 + ... + 26173.

It is an arithmetic number, because the mean of its divisors is an integer number (36145053).

Almost surely, 2^144531001 is an apocalyptic number.

It is an amenable number.

144531001 is a deficient number, since it is larger than the sum of its proper divisors (49211).

144531001 is an equidigital number, since it uses as much as digits as its factorization.

144531001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49210.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 144531001 is about 12022.1046826253. The cubic root of 144531001 is about 524.7917553534.

Adding to 144531001 its reverse (100135441), we get a palindrome (244666442).

The spelling of 144531001 in words is "one hundred forty-four million, five hundred thirty-one thousand, one".