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254345121 = 3228260569
BaseRepresentation
bin11110010100011…
…11111110100001
3122201121001220200
433022033332201
51010103020441
641123255413
76205616652
oct1712177641
9581531820
10254345121
11120631288
127121a569
1340904394
1425acb529
15174e17b6
hexf28ffa1

254345121 has 6 divisors (see below), whose sum is σ = 367387410. Its totient is φ = 169563408.

The previous prime is 254345089. The next prime is 254345131. The reversal of 254345121 is 121543452.

It can be written as a sum of positive squares in only one way, i.e., 252810000 + 1535121 = 15900^2 + 1239^2 .

It is not a de Polignac number, because 254345121 - 25 = 254345089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (254345131) 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 5 ways as a sum of consecutive naturals, for example, 14130276 + ... + 14130293.

It is an arithmetic number, because the mean of its divisors is an integer number (61231235).

Almost surely, 2254345121 is an apocalyptic number.

It is an amenable number.

254345121 is a deficient number, since it is larger than the sum of its proper divisors (113042289).

254345121 is a wasteful number, since it uses less digits than its factorization.

254345121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28260575 (or 28260572 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 254345121 is about 15948.2011838326. The cubic root of 254345121 is about 633.5892553585.

Adding to 254345121 its reverse (121543452), we get a palindrome (375888573).

The spelling of 254345121 in words is "two hundred fifty-four million, three hundred forty-five thousand, one hundred twenty-one".

Divisors: 1 3 9 28260569 84781707 254345121