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2144243255 = 57115569463
BaseRepresentation
bin111111111001110…
…1000111000110111
312112102202211202212
41333303220320313
513342411241010
6552434324035
7104064524030
oct17763507067
95472684685
102144243255
11a00407770
124ba12961b
1328230bbbb
14164ac5a87
15c83a6505
hex7fce8e37

2144243255 has 16 divisors (see below), whose sum is σ = 3208011264. Its totient is φ = 1336670880.

The previous prime is 2144243249. The next prime is 2144243261. The reversal of 2144243255 is 5523424412.

It is an interprime number because it is at equal distance from previous prime (2144243249) and next prime (2144243261).

It is not a de Polignac number, because 2144243255 - 26 = 2144243191 is a prime.

It is a super-2 number, since 2×21442432552 = 9195558273225990050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2784347 + ... + 2785116.

It is an arithmetic number, because the mean of its divisors is an integer number (200500704).

Almost surely, 22144243255 is an apocalyptic number.

2144243255 is a deficient number, since it is larger than the sum of its proper divisors (1063768009).

2144243255 is a wasteful number, since it uses less digits than its factorization.

2144243255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569486.

The product of its digits is 38400, while the sum is 32.

The square root of 2144243255 is about 46305.9742905816. The cubic root of 2144243255 is about 1289.5099103801.

Adding to 2144243255 its reverse (5523424412), we get a palindrome (7667667667).

The spelling of 2144243255 in words is "two billion, one hundred forty-four million, two hundred forty-three thousand, two hundred fifty-five".

Divisors: 1 5 7 11 35 55 77 385 5569463 27847315 38986241 61264093 194931205 306320465 428848651 2144243255