144531401 has 4 divisors (see below), whose sum is σ = 165178752. Its totient is φ = 123884052.

The previous prime is 144531397. The next prime is 144531421. The reversal of 144531401 is 104135441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144531401 - 2² = 144531397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144531421) 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, 10323665 + ... + 10323678.

It is an arithmetic number, because the mean of its divisors is an integer number (41294688).

Almost surely, 2^144531401 is an apocalyptic number.

It is an amenable number.

144531401 is a deficient number, since it is larger than the sum of its proper divisors (20647351).

144531401 is an equidigital number, since it uses as much as digits as its factorization.

144531401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20647350.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 144531401 is about 12022.1213186359. The cubic root of 144531401 is about 524.7922394860.

Adding to 144531401 its reverse (104135441), we get a palindrome (248666842).

The spelling of 144531401 in words is "one hundred forty-four million, five hundred thirty-one thousand, four hundred one".