855651079 has 2 divisors, whose sum is σ = 855651080. Its totient is φ = 855651078.

The previous prime is 855651047. The next prime is 855651091. The reversal of 855651079 is 970156558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 855651079 - 2⁵ = 855651047 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855651019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427825539 + 427825540.

It is an arithmetic number, because the mean of its divisors is an integer number (427825540).

Almost surely, 2^855651079 is an apocalyptic number.

855651079 is a deficient number, since it is larger than the sum of its proper divisors (1).

855651079 is an equidigital number, since it uses as much as digits as its factorization.

855651079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 46.

The square root of 855651079 is about 29251.5141317505. The cubic root of 855651079 is about 949.3628521811.

The spelling of 855651079 in words is "eight hundred fifty-five million, six hundred fifty-one thousand, seventy-nine".