144522605 has 4 divisors (see below), whose sum is σ = 173427132. Its totient is φ = 115618080.

The previous prime is 144522601. The next prime is 144522641. The reversal of 144522605 is 506225441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506225441 = 509 ⋅994549.

It can be written as a sum of positive squares in 2 ways, for example, as 19731364 + 124791241 = 4442^2 + 11171^2 .

It is not a de Polignac number, because 144522605 - 2² = 144522601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144522601) 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, 14452256 + ... + 14452265.

It is an arithmetic number, because the mean of its divisors is an integer number (43356783).

Almost surely, 2^144522605 is an apocalyptic number.

It is an amenable number.

144522605 is a deficient number, since it is larger than the sum of its proper divisors (28904527).

144522605 is an equidigital number, since it uses as much as digits as its factorization.

144522605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28904526.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 144522605 is about 12021.7554874486. The cubic root of 144522605 is about 524.7815932039.

The spelling of 144522605 in words is "one hundred forty-four million, five hundred twenty-two thousand, six hundred five".