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76001281 is a prime number
BaseRepresentation
bin1001000011110…
…11000000000001
312022000021011021
410201323000001
5123424020111
611312545441
71612000036
oct441730001
9168007137
1076001281
113999a984
1221552281
1312990295
14a14538d
156a13d71
hex487b001

76001281 has 2 divisors, whose sum is σ = 76001282. Its totient is φ = 76001280.

The previous prime is 76001279. The next prime is 76001287. The reversal of 76001281 is 18210067.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70711281 + 5290000 = 8409^2 + 2300^2 .

It is an emirp because it is prime and its reverse (18210067) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76001281 - 21 = 76001279 is a prime.

It is a super-2 number, since 2×760012812 = 11552389427281922, which contains 22 as substring.

Together with 76001279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (76001287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38000640 + 38000641.

It is an arithmetic number, because the mean of its divisors is an integer number (38000641).

Almost surely, 276001281 is an apocalyptic number.

It is an amenable number.

76001281 is a deficient number, since it is larger than the sum of its proper divisors (1).

76001281 is an equidigital number, since it uses as much as digits as its factorization.

76001281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 76001281 is about 8717.8713571605. The cubic root of 76001281 is about 423.5847382762.

The spelling of 76001281 in words is "seventy-six million, one thousand, two hundred eighty-one".