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252310145 = 5163309583
BaseRepresentation
bin11110000100111…
…11001010000001
3122120202200110012
433002133022001
51004042411040
641011514305
76152413043
oct1702371201
9576680405
10252310145
1111a47138a
12705b8995
1340371059
142571ba93
151723d865
hexf09f281

252310145 has 8 divisors (see below), whose sum is σ = 304630656. Its totient is φ = 200609136.

The previous prime is 252310133. The next prime is 252310171. The reversal of 252310145 is 541013252.

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 252310145 - 224 = 235532929 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 252310145.

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, 153977 + ... + 155606.

It is an arithmetic number, because the mean of its divisors is an integer number (38078832).

Almost surely, 2252310145 is an apocalyptic number.

It is an amenable number.

252310145 is a deficient number, since it is larger than the sum of its proper divisors (52320511).

252310145 is a wasteful number, since it uses less digits than its factorization.

252310145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309751.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 252310145 is about 15884.2735118733. The cubic root of 252310145 is about 631.8949788440.

Adding to 252310145 its reverse (541013252), we get a palindrome (793323397).

The spelling of 252310145 in words is "two hundred fifty-two million, three hundred ten thousand, one hundred forty-five".

Divisors: 1 5 163 815 309583 1547915 50462029 252310145