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655261361 is a prime number
BaseRepresentation
bin100111000011100…
…111111010110001
31200122222201121022
4213003213322301
52320221330421
6145004305225
722144425656
oct4703477261
91618881538
10655261361
11306972617
12163542215
13a59a6a21
146304dc2d
153c7d67ab
hex270e7eb1

655261361 has 2 divisors, whose sum is σ = 655261362. Its totient is φ = 655261360.

The previous prime is 655261331. The next prime is 655261381. The reversal of 655261361 is 163162556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 645922225 + 9339136 = 25415^2 + 3056^2 .

It is a cyclic number.

It is not a de Polignac number, because 655261361 - 26 = 655261297 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 (655261331) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327630680 + 327630681.

It is an arithmetic number, because the mean of its divisors is an integer number (327630681).

Almost surely, 2655261361 is an apocalyptic number.

It is an amenable number.

655261361 is a deficient number, since it is larger than the sum of its proper divisors (1).

655261361 is an equidigital number, since it uses as much as digits as its factorization.

655261361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 655261361 is about 25598.0733845342. The cubic root of 655261361 is about 868.5700564390.

The spelling of 655261361 in words is "six hundred fifty-five million, two hundred sixty-one thousand, three hundred sixty-one".