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253868255 = 5229221719
BaseRepresentation
bin11110010000110…
…11100011011111
3122200200211202222
433020123203133
51004442241010
641105135555
76201562454
oct1710334337
9580624688
10253868255
11120335a83
127102a5bb
1340798304
1425a0582b
151744a355
hexf21b8df

253868255 has 8 divisors (see below), whose sum is σ = 305973600. Its totient is φ = 202206816.

The previous prime is 253868249. The next prime is 253868257. The reversal of 253868255 is 552868352.

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

It is a cyclic number.

It is not a de Polignac number, because 253868255 - 224 = 237091039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253868257) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 109715 + ... + 112004.

It is an arithmetic number, because the mean of its divisors is an integer number (38246700).

Almost surely, 2253868255 is an apocalyptic number.

253868255 is a deficient number, since it is larger than the sum of its proper divisors (52105345).

253868255 is a wasteful number, since it uses less digits than its factorization.

253868255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221953.

The product of its digits is 576000, while the sum is 44.

The square root of 253868255 is about 15933.2437061635. The cubic root of 253868255 is about 633.1930401779.

The spelling of 253868255 in words is "two hundred fifty-three million, eight hundred sixty-eight thousand, two hundred fifty-five".

Divisors: 1 5 229 1145 221719 1108595 50773651 253868255