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253145351 = 1721170573
BaseRepresentation
bin11110001011010…
…11000100000111
3122122100010010202
433011223010013
51004301122401
641041441115
76162462044
oct1705530407
9578303122
10253145351
1111a991938
127094019b
13405a4264
14258981cb
151735606b
hexf16b107

253145351 has 8 divisors (see below), whose sum is σ = 269310384. Its totient is φ = 237121920.

The previous prime is 253145329. The next prime is 253145353. The reversal of 253145351 is 153541352.

253145351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 253145351 - 218 = 252883207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253145353) 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, 31700 + ... + 38873.

It is an arithmetic number, because the mean of its divisors is an integer number (33663798).

Almost surely, 2253145351 is an apocalyptic number.

253145351 is a deficient number, since it is larger than the sum of its proper divisors (16165033).

253145351 is a wasteful number, since it uses less digits than its factorization.

253145351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70801.

The product of its digits is 9000, while the sum is 29.

The square root of 253145351 is about 15910.5421340695. The cubic root of 253145351 is about 632.5914513103.

The spelling of 253145351 in words is "two hundred fifty-three million, one hundred forty-five thousand, three hundred fifty-one".

Divisors: 1 17 211 3587 70573 1199741 14890903 253145351