Search a number
-
+
2144105455 = 54147222533
BaseRepresentation
bin111111111001100…
…0111001111101111
312112102111211202011
41333303013033233
513342342333310
6552431342051
7104063411212
oct17763071757
95472454664
102144105455
11a00323188
124ba081927
1328229126b
14164a8b779
15c837a78a
hex7fcc73ef

2144105455 has 16 divisors (see below), whose sum is σ = 2691771264. Its totient is φ = 1637835520.

The previous prime is 2144105449. The next prime is 2144105461. The reversal of 2144105455 is 5545014412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2144105449) and next prime (2144105461).

It is not a de Polignac number, because 2144105455 - 29 = 2144104943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101632 + ... + 120901.

It is an arithmetic number, because the mean of its divisors is an integer number (168235704).

Almost surely, 22144105455 is an apocalyptic number.

2144105455 is a deficient number, since it is larger than the sum of its proper divisors (547665809).

2144105455 is a wasteful number, since it uses less digits than its factorization.

2144105455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222626.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 2144105455 is about 46304.4863377189. The cubic root of 2144105455 is about 1289.4822862954.

Adding to 2144105455 its reverse (5545014412), we get a palindrome (7689119867).

The spelling of 2144105455 in words is "two billion, one hundred forty-four million, one hundred five thousand, four hundred fifty-five".

Divisors: 1 5 41 47 205 235 1927 9635 222533 1112665 9123853 10459051 45619265 52295255 428821091 2144105455