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130580581 is a prime number
BaseRepresentation
bin1111100100010…
…00000001100101
3100002201011212211
413302020001211
5231412034311
620542443421
73143626255
oct762100145
9302634784
10130580581
116778913a
1237893571
132108cb21
14134b1965
15b6e5821
hex7c88065

130580581 has 2 divisors, whose sum is σ = 130580582. Its totient is φ = 130580580.

The previous prime is 130580579. The next prime is 130580599. The reversal of 130580581 is 185085031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93431556 + 37149025 = 9666^2 + 6095^2 .

It is a cyclic number.

It is not a de Polignac number, because 130580581 - 21 = 130580579 is a prime.

It is a super-2 number, since 2×1305805812 = 34102576268595122, which contains 22 as substring.

Together with 130580579, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130580381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65290290 + 65290291.

It is an arithmetic number, because the mean of its divisors is an integer number (65290291).

Almost surely, 2130580581 is an apocalyptic number.

It is an amenable number.

130580581 is a deficient number, since it is larger than the sum of its proper divisors (1).

130580581 is an equidigital number, since it uses as much as digits as its factorization.

130580581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 130580581 is about 11427.1860490674. The cubic root of 130580581 is about 507.3327116529.

The spelling of 130580581 in words is "one hundred thirty million, five hundred eighty thousand, five hundred eighty-one".