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253863241 = 509498749
BaseRepresentation
bin11110010000110…
…10010101001001
3122200200120220021
433020122111021
51004442110431
641105100441
76201542032
oct1710322511
9580616807
10253863241
11120332235
1271027721
1340795c48
1425a03a89
1517448b11
hexf21a549

253863241 has 4 divisors (see below), whose sum is σ = 254362500. Its totient is φ = 253363984.

The previous prime is 253863229. The next prime is 253863263. The reversal of 253863241 is 142368352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97713225 + 156150016 = 9885^2 + 12496^2 .

It is a cyclic number.

It is not a de Polignac number, because 253863241 - 29 = 253862729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253863197 and 253863206.

It is not an unprimeable number, because it can be changed into a prime (253863041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248866 + ... + 249883.

It is an arithmetic number, because the mean of its divisors is an integer number (63590625).

Almost surely, 2253863241 is an apocalyptic number.

It is an amenable number.

253863241 is a deficient number, since it is larger than the sum of its proper divisors (499259).

253863241 is an equidigital number, since it uses as much as digits as its factorization.

253863241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499258.

The product of its digits is 34560, while the sum is 34.

The square root of 253863241 is about 15933.0863614053. The cubic root of 253863241 is about 633.1888715448.

The spelling of 253863241 in words is "two hundred fifty-three million, eight hundred sixty-three thousand, two hundred forty-one".

Divisors: 1 509 498749 253863241