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197761001 is a prime number
BaseRepresentation
bin10111100100110…
…01011111101001
3111210010022002112
423302121133221
5401111323001
631342412105
74620640454
oct1362313751
9453108075
10197761001
11a16a3849
1256291035
1331c82159
141c39c49b
1512565cbb
hexbc997e9

197761001 has 2 divisors, whose sum is σ = 197761002. Its totient is φ = 197761000.

The previous prime is 197760977. The next prime is 197761013. The reversal of 197761001 is 100167791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144120025 + 53640976 = 12005^2 + 7324^2 .

It is a cyclic number.

It is not a de Polignac number, because 197761001 - 218 = 197498857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (197761021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98880500 + 98880501.

It is an arithmetic number, because the mean of its divisors is an integer number (98880501).

Almost surely, 2197761001 is an apocalyptic number.

It is an amenable number.

197761001 is a deficient number, since it is larger than the sum of its proper divisors (1).

197761001 is an equidigital number, since it uses as much as digits as its factorization.

197761001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 32.

The square root of 197761001 is about 14062.7522555153. The cubic root of 197761001 is about 582.6130621036.

The spelling of 197761001 in words is "one hundred ninety-seven million, seven hundred sixty-one thousand, one".