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318125 = 54509
BaseRepresentation
bin1001101101010101101
3121011101102
41031222231
540140000
610452445
72463323
oct1155255
9534342
10318125
111a8015
12134125
13b1a52
1483d13
15643d5
hex4daad

318125 has 10 divisors (see below), whose sum is σ = 398310. Its totient is φ = 254000.

The previous prime is 318107. The next prime is 318127. The reversal of 318125 is 521813.

It can be written as a sum of positive squares in 5 ways, for example, as 75076 + 243049 = 274^2 + 493^2 .

It is not a de Polignac number, because 318125 - 216 = 252589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 318097 and 318106.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 318125.

It is not an unprimeable number, because it can be changed into a prime (318127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 371 + ... + 879.

It is an arithmetic number, because the mean of its divisors is an integer number (39831).

2318125 is an apocalyptic number.

It is an amenable number.

318125 is a deficient number, since it is larger than the sum of its proper divisors (80185).

318125 is an frugal number, since it uses more digits than its factorization.

318125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 514 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 318125 is about 564.0257086339. The cubic root of 318125 is about 68.2651842219.

Adding to 318125 its reverse (521813), we get a palindrome (839938).

The spelling of 318125 in words is "three hundred eighteen thousand, one hundred twenty-five".

Divisors: 1 5 25 125 509 625 2545 12725 63625 318125