144356561 has 8 divisors (see below), whose sum is σ = 148794048. Its totient is φ = 139986000.

The previous prime is 144356557. The next prime is 144356581. The reversal of 144356561 is 165653441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144356561 - 2² = 144356557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144356501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12335 + ... + 20996.

It is an arithmetic number, because the mean of its divisors is an integer number (18599256).

Almost surely, 2^144356561 is an apocalyptic number.

It is an amenable number.

144356561 is a deficient number, since it is larger than the sum of its proper divisors (4437487).

144356561 is an equidigital number, since it uses as much as digits as its factorization.

144356561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33463.

The product of its digits is 43200, while the sum is 35.

The square root of 144356561 is about 12014.8475229609. The cubic root of 144356561 is about 524.5805399337.

The spelling of 144356561 in words is "one hundred forty-four million, three hundred fifty-six thousand, five hundred sixty-one".