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253664255 = 51310935803
BaseRepresentation
bin11110001111010…
…01101111111111
3122200022110221102
433013221233333
51004414224010
641100523315
76200052635
oct1707515777
9580273842
10253664255
11120206789
1270b5053b
13407264c0
1425991355
1517409ba5
hexf1e9bff

253664255 has 16 divisors (see below), whose sum is σ = 330828960. Its totient is φ = 185597568.

The previous prime is 253664251. The next prime is 253664261. The reversal of 253664255 is 552466352.

It is not a de Polignac number, because 253664255 - 22 = 253664251 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253664251) 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, 10817 + ... + 24986.

It is an arithmetic number, because the mean of its divisors is an integer number (20676810).

Almost surely, 2253664255 is an apocalyptic number.

253664255 is a deficient number, since it is larger than the sum of its proper divisors (77164705).

253664255 is a wasteful number, since it uses less digits than its factorization.

253664255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35930.

The product of its digits is 216000, while the sum is 38.

The square root of 253664255 is about 15926.8407099462. The cubic root of 253664255 is about 633.0233905107.

The spelling of 253664255 in words is "two hundred fifty-three million, six hundred sixty-four thousand, two hundred fifty-five".

Divisors: 1 5 13 65 109 545 1417 7085 35803 179015 465439 2327195 3902527 19512635 50732851 253664255