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65114281 is a prime number
BaseRepresentation
bin1111100001100…
…1000010101001
311112112011000001
43320121002221
5113132124111
610243343001
71420314361
oct370310251
9145464001
1065114281
1133834361
1219981a61
131064aa7b
14890d9a1
155ab31c1
hex3e190a9

65114281 has 2 divisors, whose sum is σ = 65114282. Its totient is φ = 65114280.

The previous prime is 65114261. The next prime is 65114299. The reversal of 65114281 is 18241156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64320400 + 793881 = 8020^2 + 891^2 .

It is a cyclic number.

It is not a de Polignac number, because 65114281 - 213 = 65106089 is a prime.

It is a super-2 number, since 2×651142812 = 8479739180293922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65114201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32557140 + 32557141.

It is an arithmetic number, because the mean of its divisors is an integer number (32557141).

Almost surely, 265114281 is an apocalyptic number.

65114281 is the 5104-th centered pentagonal number.

It is an amenable number.

65114281 is a deficient number, since it is larger than the sum of its proper divisors (1).

65114281 is an equidigital number, since it uses as much as digits as its factorization.

65114281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 28.

The square root of 65114281 is about 8069.3420425708. The cubic root of 65114281 is about 402.3080751074.

The spelling of 65114281 in words is "sixty-five million, one hundred fourteen thousand, two hundred eighty-one".