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253805083 = 7109332641
BaseRepresentation
bin11110010000011…
…00001000011011
3122200120122010021
433020030020123
51004433230313
641103531311
76201210340
oct1710141033
9580518107
10253805083
111202a2574
1270bb9b37
134077562c
14259ca7c7
151743678d
hexf20c21b

253805083 has 8 divisors (see below), whose sum is σ = 292724960. Its totient is φ = 215550720.

The previous prime is 253805063. The next prime is 253805093. The reversal of 253805083 is 380508352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-253805083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253805063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165558 + ... + 167083.

It is an arithmetic number, because the mean of its divisors is an integer number (36590620).

Almost surely, 2253805083 is an apocalyptic number.

253805083 is a deficient number, since it is larger than the sum of its proper divisors (38919877).

253805083 is a wasteful number, since it uses less digits than its factorization.

253805083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332757.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 253805083 is about 15931.2611867360. The cubic root of 253805083 is about 633.1405150482.

The spelling of 253805083 in words is "two hundred fifty-three million, eight hundred five thousand, eighty-three".

Divisors: 1 7 109 763 332641 2328487 36257869 253805083