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52105312531 is a prime number
BaseRepresentation
bin110000100001101101…
…111111100100010011
311222111022100010111001
4300201231333210103
51323202430000111
635534205402431
73523134564106
oct604155774423
9158438303431
1052105312531
11201090aa568
12a121b69417
134bb4c9a99c
1427441a073d
15154e60b1c1
hexc21b7f913

52105312531 has 2 divisors, whose sum is σ = 52105312532. Its totient is φ = 52105312530.

The previous prime is 52105312513. The next prime is 52105312543. The reversal of 52105312531 is 13521350125.

Together with previous prime (52105312513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52105312531 - 27 = 52105312403 is a prime.

It is a super-2 number, since 2×521053125312 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52105312531.

It is not a weakly prime, because it can be changed into another prime (52105312561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26052656265 + 26052656266.

It is an arithmetic number, because the mean of its divisors is an integer number (26052656266).

Almost surely, 252105312531 is an apocalyptic number.

52105312531 is a deficient number, since it is larger than the sum of its proper divisors (1).

52105312531 is an equidigital number, since it uses as much as digits as its factorization.

52105312531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 52105312531 its reverse (13521350125), we get a palindrome (65626662656).

The spelling of 52105312531 in words is "fifty-two billion, one hundred five million, three hundred twelve thousand, five hundred thirty-one".