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253253085 = 35292931987
BaseRepresentation
bin11110001100001…
…01010111011101
3122122112120220220
433012011113131
51004313044320
641044031553
76163421121
oct1706052735
9578476826
10253253085
1111aa55878
12709925b9
13406112c7
14258c5581
1517377e40
hexf1855dd

253253085 has 32 divisors (see below), whose sum is σ = 420819840. Its totient is φ = 129900288.

The previous prime is 253253081. The next prime is 253253087. The reversal of 253253085 is 580352352.

It is not a de Polignac number, because 253253085 - 22 = 253253081 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253253081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126462 + ... + 128448.

It is an arithmetic number, because the mean of its divisors is an integer number (13150620).

Almost surely, 2253253085 is an apocalyptic number.

It is an amenable number.

253253085 is a deficient number, since it is larger than the sum of its proper divisors (167566755).

253253085 is a wasteful number, since it uses less digits than its factorization.

253253085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 253253085 is about 15913.9273908109. The cubic root of 253253085 is about 632.6811783405.

The spelling of 253253085 in words is "two hundred fifty-three million, two hundred fifty-three thousand, eighty-five".

Divisors: 1 3 5 15 29 87 145 293 435 879 1465 1987 4395 5961 8497 9935 25491 29805 42485 57623 127455 172869 288115 582191 864345 1746573 2910955 8732865 16883539 50650617 84417695 253253085