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255152105 = 51310936013
BaseRepresentation
bin11110011010101…
…00111111101001
3122210010001212222
433031110333221
51010304331410
641152443425
76215520455
oct1715247751
9583101788
10255152105
1112103260a
1271549575
1340b277a0
1425c5b665
1517600955
hexf354fe9

255152105 has 16 divisors (see below), whose sum is σ = 332769360. Its totient is φ = 186686208.

The previous prime is 255152101. The next prime is 255152113. The reversal of 255152105 is 501251552.

It can be written as a sum of positive squares in 8 ways, for example, as 9665881 + 245486224 = 3109^2 + 15668^2 .

It is a cyclic number.

It is not a de Polignac number, because 255152105 - 22 = 255152101 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (255152101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10922 + ... + 25091.

It is an arithmetic number, because the mean of its divisors is an integer number (20798085).

Almost surely, 2255152105 is an apocalyptic number.

It is an amenable number.

255152105 is a deficient number, since it is larger than the sum of its proper divisors (77617255).

255152105 is a wasteful number, since it uses less digits than its factorization.

255152105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36140.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 255152105 is about 15973.4813049629. The cubic root of 255152105 is about 634.2586300978.

The spelling of 255152105 in words is "two hundred fifty-five million, one hundred fifty-two thousand, one hundred five".

Divisors: 1 5 13 65 109 545 1417 7085 36013 180065 468169 2340845 3925417 19627085 51030421 255152105