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8026152581 is a prime number
BaseRepresentation
bin1110111100110010…
…10101111010000101
3202201100121210111102
413132121111322011
5112414143340311
63404232145445
7402616112516
oct73631257205
922640553442
108026152581
113449610257
12167bb38285
139aba9bb15
14561d54a0d
1531e96443b
hex1de655e85

8026152581 has 2 divisors, whose sum is σ = 8026152582. Its totient is φ = 8026152580.

The previous prime is 8026152559. The next prime is 8026152583. The reversal of 8026152581 is 1852516208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6734828356 + 1291324225 = 82066^2 + 35935^2 .

It is a cyclic number.

It is not a de Polignac number, because 8026152581 - 210 = 8026151557 is a prime.

It is a super-2 number, since 2×80261525812 (a number of 21 digits) contains 22 as substring.

Together with 8026152583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8026152583) 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, 4013076290 + 4013076291.

It is an arithmetic number, because the mean of its divisors is an integer number (4013076291).

Almost surely, 28026152581 is an apocalyptic number.

It is an amenable number.

8026152581 is a deficient number, since it is larger than the sum of its proper divisors (1).

8026152581 is an equidigital number, since it uses as much as digits as its factorization.

8026152581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 8026152581 is about 89588.7971846927. The cubic root of 8026152581 is about 2002.1770112013.

Adding to 8026152581 its reverse (1852516208), we get a palindrome (9878668789).

The spelling of 8026152581 in words is "eight billion, twenty-six million, one hundred fifty-two thousand, five hundred eighty-one".