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253523073 = 31394191451
BaseRepresentation
bin11110001110001…
…11010010000001
3122200001022021110
433013013102001
51004400214243
641053513533
76165624216
oct1707072201
9580038243
10253523073
1112011a701
1270aa28a9
13406a716b
1425955b0d
15173cce33
hexf1c7481

253523073 has 16 divisors (see below), whose sum is σ = 341510400. Its totient is φ = 167283600.

The previous prime is 253523051. The next prime is 253523093. The reversal of 253523073 is 370325352.

It is not a de Polignac number, because 253523073 - 28 = 253522817 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 253523073.

It is not an unprimeable number, because it can be changed into a prime (253523093) 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 15 ways as a sum of consecutive naturals, for example, 173998 + ... + 175448.

It is an arithmetic number, because the mean of its divisors is an integer number (21344400).

Almost surely, 2253523073 is an apocalyptic number.

It is an amenable number.

253523073 is a deficient number, since it is larger than the sum of its proper divisors (87987327).

253523073 is a wasteful number, since it uses less digits than its factorization.

253523073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012.

The product of its (nonzero) digits is 18900, while the sum is 30.

The square root of 253523073 is about 15922.4078895122. The cubic root of 253523073 is about 632.9059280353.

The spelling of 253523073 in words is "two hundred fifty-three million, five hundred twenty-three thousand, seventy-three".

Divisors: 1 3 139 417 419 1257 1451 4353 58241 174723 201689 605067 607969 1823907 84507691 253523073