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243041255 = 5195994271
BaseRepresentation
bin11100111110010…
…00001111100111
3121221022202220222
432133020033213
5444204310010
640041114555
76010550042
oct1637101747
9557282828
10243041255
11115210546
1269488a5b
133b4771c2
14243c7c59
151650c355
hexe7c83e7

243041255 has 16 divisors (see below), whose sum is σ = 307584000. Its totient is φ = 183849120.

The previous prime is 243041219. The next prime is 243041261. The reversal of 243041255 is 552140342.

It is a happy number.

It is not a de Polignac number, because 243041255 - 28 = 243040999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54770 + ... + 59040.

It is an arithmetic number, because the mean of its divisors is an integer number (19224000).

Almost surely, 2243041255 is an apocalyptic number.

243041255 is a deficient number, since it is larger than the sum of its proper divisors (64542745).

243041255 is a wasteful number, since it uses less digits than its factorization.

243041255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4894.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 243041255 is about 15589.7804667032. The cubic root of 243041255 is about 624.0604592622.

Adding to 243041255 its reverse (552140342), we get a palindrome (795181597).

The spelling of 243041255 in words is "two hundred forty-three million, forty-one thousand, two hundred fifty-five".

Divisors: 1 5 19 95 599 2995 4271 11381 21355 56905 81149 405745 2558329 12791645 48608251 243041255