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253865095 = 5114798207
BaseRepresentation
bin11110010000110…
…10110010000111
3122200200200102221
433020122302013
51004442140340
641105113211
76201550321
oct1710326207
9580620387
10253865095
11120333670
1271028807
1340796a43
1425a04611
151744944a
hexf21ac87

253865095 has 16 divisors (see below), whose sum is σ = 339406848. Its totient is φ = 180699040.

The previous prime is 253865093. The next prime is 253865111. The reversal of 253865095 is 590568352.

253865095 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 253865095 - 21 = 253865093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253865093) 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, 46519 + ... + 51688.

It is an arithmetic number, because the mean of its divisors is an integer number (21212928).

Almost surely, 2253865095 is an apocalyptic number.

253865095 is a deficient number, since it is larger than the sum of its proper divisors (85541753).

253865095 is a wasteful number, since it uses less digits than its factorization.

253865095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98270.

The product of its (nonzero) digits is 324000, while the sum is 43.

The square root of 253865095 is about 15933.1445421172. The cubic root of 253865095 is about 633.1904129644.

The spelling of 253865095 in words is "two hundred fifty-three million, eight hundred sixty-five thousand, ninety-five".

Divisors: 1 5 11 47 55 235 517 2585 98207 491035 1080277 4615729 5401385 23078645 50773019 253865095