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252983609 = 11317312941
BaseRepresentation
bin11110001010000…
…11100100111001
3122122000220021022
433011003210321
51004230433414
641034152225
76161216354
oct1705034471
9578026238
10252983609
1111a89136a
1270882675
1340548758
142585529b
151732318e
hexf143939

252983609 has 8 divisors (see below), whose sum is σ = 256717512. Its totient is φ = 249276160.

The previous prime is 252983603. The next prime is 252983611. The reversal of 252983609 is 906389252.

252983609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 46199209 + 206784400 = 6797^2 + 14380^2 .

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 252983609 - 212 = 252979513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252983609.

It is not an unprimeable number, because it can be changed into a prime (252983603) 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, 13079 + ... + 26019.

It is an arithmetic number, because the mean of its divisors is an integer number (32089689).

Almost surely, 2252983609 is an apocalyptic number.

It is an amenable number.

252983609 is a deficient number, since it is larger than the sum of its proper divisors (3733903).

252983609 is a wasteful number, since it uses less digits than its factorization.

252983609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13227.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 252983609 is about 15905.4584655709. The cubic root of 252983609 is about 632.4566955203.

The spelling of 252983609 in words is "two hundred fifty-two million, nine hundred eighty-three thousand, six hundred nine".

Divisors: 1 113 173 12941 19549 1462333 2238793 252983609