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283025 = 5211321
BaseRepresentation
bin1000101000110010001
3112101020102
41011012101
533024100
610022145
72256101
oct1050621
9471212
10283025
11183706
12117955
139ba92
1475201
1558cd5
hex45191

283025 has 6 divisors (see below), whose sum is σ = 350982. Its totient is φ = 226400.

The previous prime is 283009. The next prime is 283027. The reversal of 283025 is 520382.

It is a Cunningham number, because it is equal to 5322+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1 + 283024 = 1^2 + 532^2 .

It is not a de Polignac number, because 283025 - 24 = 283009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 282988 and 283006.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 283025.

It is not an unprimeable number, because it can be changed into a prime (283027) 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 5 ways as a sum of consecutive naturals, for example, 5636 + ... + 5685.

It is an arithmetic number, because the mean of its divisors is an integer number (58497).

283025 is a Friedman number, since it can be written as 532^2+8^0, using all its digits and the basic arithmetic operations.

2283025 is an apocalyptic number.

283025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

283025 is a deficient number, since it is larger than the sum of its proper divisors (67957).

283025 is a wasteful number, since it uses less digits than its factorization.

283025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11331 (or 11326 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 283025 is about 532.0009398488. Note that the first 3 decimals coincide. The cubic root of 283025 is about 65.6560774952.

The spelling of 283025 in words is "two hundred eighty-three thousand, twenty-five".

Divisors: 1 5 25 11321 56605 283025