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275081 = 1391979
BaseRepresentation
bin1000011001010001001
3111222100012
41003022021
532300311
65521305
72223662
oct1031211
9458305
10275081
11178744
12113235
1398291
1472369
155678b
hex43289

275081 has 4 divisors (see below), whose sum is σ = 277200. Its totient is φ = 272964.

The previous prime is 275059. The next prime is 275083. The reversal of 275081 is 180572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 275081 - 214 = 258697 is a prime.

It is a super-2 number, since 2×2750812 = 151339113122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (275083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851 + ... + 1128.

It is an arithmetic number, because the mean of its divisors is an integer number (69300).

2275081 is an apocalyptic number.

It is an amenable number.

275081 is a deficient number, since it is larger than the sum of its proper divisors (2119).

275081 is a wasteful number, since it uses less digits than its factorization.

275081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 275081 is about 524.4816488687. The cubic root of 275081 is about 65.0359564375.

The spelling of 275081 in words is "two hundred seventy-five thousand, eighty-one".

Divisors: 1 139 1979 275081