144455653 has 6 divisors (see below), whose sum is σ = 145374054. Its totient is φ = 143543016.

The previous prime is 144455621. The next prime is 144455683. The reversal of 144455653 is 356554441.

It can be written as a sum of positive squares in only one way, i.e., 126495009 + 17960644 = 11247^2 + 4238^2 .

It is not a de Polignac number, because 144455653 - 2⁵ = 144455621 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 (144455683) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23851 + ... + 29287.

It is an arithmetic number, because the mean of its divisors is an integer number (24229009).

Almost surely, 2^144455653 is an apocalyptic number.

It is an amenable number.

144455653 is a deficient number, since it is larger than the sum of its proper divisors (918401).

144455653 is an frugal number, since it uses more digits than its factorization.

144455653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763 (or 5600 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

The square root of 144455653 is about 12018.9705465984. The cubic root of 144455653 is about 524.7005433589.

The spelling of 144455653 in words is "one hundred forty-four million, four hundred fifty-five thousand, six hundred fifty-three".