144265561 has 8 divisors (see below), whose sum is σ = 160048800. Its totient is φ = 128927040.

The previous prime is 144265543. The next prime is 144265577. The reversal of 144265561 is 165562441.

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

It is not a de Polignac number, because 144265561 - 2¹³ = 144257369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144265501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110496 + ... + 111793.

It is an arithmetic number, because the mean of its divisors is an integer number (20006100).

Almost surely, 2^144265561 is an apocalyptic number.

144265561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144265561 is a deficient number, since it is larger than the sum of its proper divisors (15783239).

144265561 is a wasteful number, since it uses less digits than its factorization.

144265561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222359.

The product of its digits is 28800, while the sum is 34.

The square root of 144265561 is about 12011.0599449008. The cubic root of 144265561 is about 524.4702877841.

The spelling of 144265561 in words is "one hundred forty-four million, two hundred sixty-five thousand, five hundred sixty-one".