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103135225 = 5219121599
BaseRepresentation
bin1100010010110…
…11011111111001
321012001210221011
412021123133321
5202400311400
614122313521
72361430534
oct611333771
9235053834
10103135225
1153243026
122a6588a1
13184a087b
14d9a9a1b
1590c38ba
hex625b7f9

103135225 has 12 divisors (see below), whose sum is σ = 128563200. Its totient is φ = 82072400.

The previous prime is 103135189. The next prime is 103135229. The reversal of 103135225 is 522531301.

It is a de Polignac number, because none of the positive numbers 2k-103135225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103135196 and 103135205.

It is not an unprimeable number, because it can be changed into a prime (103135229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6025 + ... + 15574.

It is an arithmetic number, because the mean of its divisors is an integer number (10713600).

Almost surely, 2103135225 is an apocalyptic number.

It is an amenable number.

103135225 is a deficient number, since it is larger than the sum of its proper divisors (25427975).

103135225 is a wasteful number, since it uses less digits than its factorization.

103135225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21800 (or 21795 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 103135225 is about 10155.5514375144. The cubic root of 103135225 is about 468.9598621776.

Adding to 103135225 its reverse (522531301), we get a palindrome (625666526).

The spelling of 103135225 in words is "one hundred three million, one hundred thirty-five thousand, two hundred twenty-five".

Divisors: 1 5 25 191 955 4775 21599 107995 539975 4125409 20627045 103135225