855146077 has 2 divisors, whose sum is σ = 855146078. Its totient is φ = 855146076.

The previous prime is 855146057. The next prime is 855146107. The reversal of 855146077 is 770641558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 778075236 + 77070841 = 27894^2 + 8779^2 .

It is a cyclic number.

It is not a de Polignac number, because 855146077 - 2¹⁵ = 855113309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855146027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427573038 + 427573039.

It is an arithmetic number, because the mean of its divisors is an integer number (427573039).

Almost surely, 2^855146077 is an apocalyptic number.

It is an amenable number.

855146077 is a deficient number, since it is larger than the sum of its proper divisors (1).

855146077 is an equidigital number, since it uses as much as digits as its factorization.

855146077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 855146077 is about 29242.8807917414. The cubic root of 855146077 is about 949.1760453151.

The spelling of 855146077 in words is "eight hundred fifty-five million, one hundred forty-six thousand, seventy-seven".