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2755143 = 321072861
BaseRepresentation
bin1010100000101001000111
312011222100100
422200221013
51201131033
6135015143
732263326
oct12405107
95158310
102755143
111611a86
12b0a4b3
13756081
1451a0bd
15396513
hex2a0a47

2755143 has 12 divisors (see below), whose sum is σ = 4018248. Its totient is φ = 1818960.

The previous prime is 2755141. The next prime is 2755153. The reversal of 2755143 is 3415572.

It is a happy number.

It is not a de Polignac number, because 2755143 - 21 = 2755141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2755141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 468 + ... + 2393.

It is an arithmetic number, because the mean of its divisors is an integer number (334854).

22755143 is an apocalyptic number.

2755143 is a deficient number, since it is larger than the sum of its proper divisors (1263105).

2755143 is a wasteful number, since it uses less digits than its factorization.

2755143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974 (or 2971 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 2755143 is about 1659.8623436900. The cubic root of 2755143 is about 140.1892508597.

The spelling of 2755143 in words is "two million, seven hundred fifty-five thousand, one hundred forty-three".

Divisors: 1 3 9 107 321 963 2861 8583 25749 306127 918381 2755143