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275143043 = 7231708963
BaseRepresentation
bin10000011001100…
…101100110000011
3201011201201022002
4100121211212003
51030414034133
643145134215
76550451210
oct2031454603
9634651262
10275143043
1113134704a
127818a36b
1345006a46
1428782b07
151924dce8
hex10665983

275143043 has 8 divisors (see below), whose sum is σ = 328121088. Its totient is φ = 225582984.

The previous prime is 275143013. The next prime is 275143049. The reversal of 275143043 is 340341572.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 275143043 - 26 = 275142979 is a prime.

It is a super-2 number, since 2×2751430432 = 151407388222599698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 275142997 and 275143015.

It is not an unprimeable number, because it can be changed into a prime (275143049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854321 + ... + 854642.

It is an arithmetic number, because the mean of its divisors is an integer number (41015136).

Almost surely, 2275143043 is an apocalyptic number.

275143043 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

275143043 is a deficient number, since it is larger than the sum of its proper divisors (52978045).

275143043 is a wasteful number, since it uses less digits than its factorization.

275143043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708993.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 275143043 is about 16587.4362998023. The cubic root of 275143043 is about 650.4084557014.

The spelling of 275143043 in words is "two hundred seventy-five million, one hundred forty-three thousand, forty-three".

Divisors: 1 7 23 161 1708963 11962741 39306149 275143043