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80293517 is a prime number
BaseRepresentation
bin1001100100100…
…10111010001101
312121002022222222
410302102322031
5131023343032
611544545125
71663324613
oct462227215
9177068888
1080293517
1141361787
1222a821a5
1313833b75
14a9416b3
1570b0a12
hex4c92e8d

80293517 has 2 divisors, whose sum is σ = 80293518. Its totient is φ = 80293516.

The previous prime is 80293511. The next prime is 80293519. The reversal of 80293517 is 71539208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79103236 + 1190281 = 8894^2 + 1091^2 .

It is a cyclic number.

It is not a de Polignac number, because 80293517 - 210 = 80292493 is a prime.

Together with 80293519, 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 (80293511) by changing a digit.

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 as a sum of consecutive naturals, namely, 40146758 + 40146759.

It is an arithmetic number, because the mean of its divisors is an integer number (40146759).

Almost surely, 280293517 is an apocalyptic number.

It is an amenable number.

80293517 is a deficient number, since it is larger than the sum of its proper divisors (1).

80293517 is an equidigital number, since it uses as much as digits as its factorization.

80293517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 80293517 is about 8960.6649864840. The cubic root of 80293517 is about 431.4132641790.

The spelling of 80293517 in words is "eighty million, two hundred ninety-three thousand, five hundred seventeen".