144204481 has 4 divisors (see below), whose sum is σ = 144252864. Its totient is φ = 144156100.

The previous prime is 144204469. The next prime is 144204491. The reversal of 144204481 is 184402441.

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, and also an emirpimes, since its reverse is a distinct semiprime: 184402441 = 197 ⋅936053.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144204481 is a prime.

It is a super-2 number, since 2×144204481² = 41589864680958722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144204451) 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, 19405 + ... + 25786.

It is an arithmetic number, because the mean of its divisors is an integer number (36063216).

Almost surely, 2^144204481 is an apocalyptic number.

It is an amenable number.

144204481 is a deficient number, since it is larger than the sum of its proper divisors (48383).

144204481 is an equidigital number, since it uses as much as digits as its factorization.

144204481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48382.

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 144204481 is about 12008.5170191827. The cubic root of 144204481 is about 524.3962595660.

The spelling of 144204481 in words is "one hundred forty-four million, two hundred four thousand, four hundred eighty-one".