144564461 has 4 divisors (see below), whose sum is σ = 144670524. Its totient is φ = 144458400.

The previous prime is 144564451. The next prime is 144564473. The reversal of 144564461 is 164465441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53743561 + 90820900 = 7331^2 + 9530^2 .

It is a cyclic number.

It is not a de Polignac number, because 144564461 - 2¹⁰ = 144563437 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 (144564421) 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, 50960 + ... + 53721.

It is an arithmetic number, because the mean of its divisors is an integer number (36167631).

Almost surely, 2^144564461 is an apocalyptic number.

It is an amenable number.

144564461 is a deficient number, since it is larger than the sum of its proper divisors (106063).

144564461 is a wasteful number, since it uses less digits than its factorization.

144564461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106062.

The product of its digits is 46080, while the sum is 35.

The square root of 144564461 is about 12023.4962053473. The cubic root of 144564461 is about 524.8322499581.

The spelling of 144564461 in words is "one hundred forty-four million, five hundred sixty-four thousand, four hundred sixty-one".