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65490041 is a prime number
BaseRepresentation
bin1111100111010…
…0110001111001
311120020020110002
43321310301321
5113231140131
610255402345
71423441031
oct371646171
9146206402
1065490041
1133a70701
1219b233b5
131074cb06
1489aa8c1
155b396cb
hex3e74c79

65490041 has 2 divisors, whose sum is σ = 65490042. Its totient is φ = 65490040.

The previous prime is 65490031. The next prime is 65490043. The reversal of 65490041 is 14009456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47554816 + 17935225 = 6896^2 + 4235^2 .

It is a cyclic number.

It is not a de Polignac number, because 65490041 - 222 = 61295737 is a prime.

Together with 65490043, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65489986 and 65490013.

It is not a weakly prime, because it can be changed into another prime (65490043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32745020 + 32745021.

It is an arithmetic number, because the mean of its divisors is an integer number (32745021).

Almost surely, 265490041 is an apocalyptic number.

It is an amenable number.

65490041 is a deficient number, since it is larger than the sum of its proper divisors (1).

65490041 is an equidigital number, since it uses as much as digits as its factorization.

65490041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 65490041 is about 8092.5917356555. The cubic root of 65490041 is about 403.0804679771.

Adding to 65490041 its reverse (14009456), we get a palindrome (79499497).

The spelling of 65490041 in words is "sixty-five million, four hundred ninety thousand, forty-one".