655159811 has 2 divisors, whose sum is σ = 655159812. Its totient is φ = 655159810.

The previous prime is 655159789. The next prime is 655159819. The reversal of 655159811 is 118951556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655159811 - 2¹⁰ = 655158787 is a prime.

It is not a weakly prime, because it can be changed into another prime (655159819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327579905 + 327579906.

It is an arithmetic number, because the mean of its divisors is an integer number (327579906).

Almost surely, 2^655159811 is an apocalyptic number.

655159811 is a deficient number, since it is larger than the sum of its proper divisors (1).

655159811 is an equidigital number, since it uses as much as digits as its factorization.

655159811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 41.

The square root of 655159811 is about 25596.0897599614. The cubic root of 655159811 is about 868.5251848548.

The spelling of 655159811 in words is "six hundred fifty-five million, one hundred fifty-nine thousand, eight hundred eleven".