144861361 has 6 divisors (see below), whose sum is σ = 145653270. Its totient is φ = 144073728.

The previous prime is 144861347. The next prime is 144861421. The reversal of 144861361 is 163168441.

It can be written as a sum of positive squares in 3 ways, for example, as 8088336 + 136773025 = 2844^2 + 11695^2 .

It is not a de Polignac number, because 144861361 - 2⁵ = 144861329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144861341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35305 + ... + 39193.

It is an arithmetic number, because the mean of its divisors is an integer number (24275545).

Almost surely, 2^144861361 is an apocalyptic number.

It is an amenable number.

144861361 is a deficient number, since it is larger than the sum of its proper divisors (791909).

144861361 is an frugal number, since it uses more digits than its factorization.

144861361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275 (or 4082 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 144861361 is about 12035.8365309604. The cubic root of 144861361 is about 525.1912965767.

The spelling of 144861361 in words is "one hundred forty-four million, eight hundred sixty-one thousand, three hundred sixty-one".