855473761 has 2 divisors, whose sum is σ = 855473762. Its totient is φ = 855473760.

The previous prime is 855473611. The next prime is 855473767. The reversal of 855473761 is 167374558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 578883600 + 276590161 = 24060^2 + 16631^2 .

It is a cyclic number.

It is not a de Polignac number, because 855473761 - 2¹⁷ = 855342689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (855473767) 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, 427736880 + 427736881.

It is an arithmetic number, because the mean of its divisors is an integer number (427736881).

Almost surely, 2^855473761 is an apocalyptic number.

It is an amenable number.

855473761 is a deficient number, since it is larger than the sum of its proper divisors (1).

855473761 is an equidigital number, since it uses as much as digits as its factorization.

855473761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 46.

The square root of 855473761 is about 29248.4830546817. The cubic root of 855473761 is about 949.2972683015.

The spelling of 855473761 in words is "eight hundred fifty-five million, four hundred seventy-three thousand, seven hundred sixty-one".