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253929801 = 397872611
BaseRepresentation
bin11110010001010…
…10100101001001
3122200210222012110
433020222211021
51010001223201
641110332533
76202240056
oct1710524511
9580728173
10253929801
11120378244
127105a149
13407ba328
1425a2002d
151745d6d6
hexf22a949

253929801 has 8 divisors (see below), whose sum is σ = 342063904. Its totient is φ = 167541120.

The previous prime is 253929757. The next prime is 253929817. The reversal of 253929801 is 108929352.

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

It is not a de Polignac number, because 253929801 - 211 = 253927753 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 253929801.

It is not an unprimeable number, because it can be changed into a prime (253929881) 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 7 ways as a sum of consecutive naturals, for example, 436015 + ... + 436596.

It is an arithmetic number, because the mean of its divisors is an integer number (42757988).

Almost surely, 2253929801 is an apocalyptic number.

It is an amenable number.

253929801 is a deficient number, since it is larger than the sum of its proper divisors (88134103).

253929801 is an equidigital number, since it uses as much as digits as its factorization.

253929801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872711.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 253929801 is about 15935.1749598177. The cubic root of 253929801 is about 633.2442049707.

The spelling of 253929801 in words is "two hundred fifty-three million, nine hundred twenty-nine thousand, eight hundred one".

Divisors: 1 3 97 291 872611 2617833 84643267 253929801