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80285461 is a prime number
BaseRepresentation
bin1001100100100…
…00111100010101
312121001220221121
410302100330111
5131023113321
611544443541
71663262254
oct462207425
9177056847
1080285461
1141356723
1222a795b1
13138302b9
14a93c79b
1570ad441
hex4c90f15

80285461 has 2 divisors, whose sum is σ = 80285462. Its totient is φ = 80285460.

The previous prime is 80285459. The next prime is 80285467. The reversal of 80285461 is 16458208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59582961 + 20702500 = 7719^2 + 4550^2 .

It is a cyclic number.

It is not a de Polignac number, because 80285461 - 21 = 80285459 is a prime.

Together with 80285459, it forms a pair of twin primes.

It is equal to p4685083 and since 80285461 and 4685083 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80285467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40142730 + 40142731.

It is an arithmetic number, because the mean of its divisors is an integer number (40142731).

Almost surely, 280285461 is an apocalyptic number.

It is an amenable number.

80285461 is a deficient number, since it is larger than the sum of its proper divisors (1).

80285461 is an equidigital number, since it uses as much as digits as its factorization.

80285461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 80285461 is about 8960.2154549988. The cubic root of 80285461 is about 431.3988355276.

The spelling of 80285461 in words is "eighty million, two hundred eighty-five thousand, four hundred sixty-one".