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252252065 = 5133880801
BaseRepresentation
bin11110000100100…
…00111110100001
3122120122201210002
433002100332201
51004034031230
641010345345
76152051522
oct1702207641
9576581702
10252252065
1111a43178a
127058b255
13403507a0
1425704849
151722b545
hexf090fa1

252252065 has 8 divisors (see below), whose sum is σ = 325987368. Its totient is φ = 186278400.

The previous prime is 252252059. The next prime is 252252073. The reversal of 252252065 is 560252252.

It can be written as a sum of positive squares in 4 ways, for example, as 8392609 + 243859456 = 2897^2 + 15616^2 .

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

It is a de Polignac number, because none of the positive numbers 2k-252252065 is a prime.

It is a super-2 number, since 2×2522520652 = 127262208593528450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 1940336 + ... + 1940465.

It is an arithmetic number, because the mean of its divisors is an integer number (40748421).

Almost surely, 2252252065 is an apocalyptic number.

It is an amenable number.

252252065 is a deficient number, since it is larger than the sum of its proper divisors (73735303).

252252065 is a wasteful number, since it uses less digits than its factorization.

252252065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880819.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 252252065 is about 15882.4451832833. The cubic root of 252252065 is about 631.8464892139.

The spelling of 252252065 in words is "two hundred fifty-two million, two hundred fifty-two thousand, sixty-five".

Divisors: 1 5 13 65 3880801 19404005 50450413 252252065