855545573 has 2 divisors, whose sum is σ = 855545574. Its totient is φ = 855545572.

The previous prime is 855545549. The next prime is 855545597. The reversal of 855545573 is 375545558.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (855545549) and next prime (855545597).

It can be written as a sum of positive squares in only one way, i.e., 571353409 + 284192164 = 23903^2 + 16858^2 .

It is a cyclic number.

It is not a de Polignac number, because 855545573 - 2¹⁰ = 855544549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855545543) 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, 427772786 + 427772787.

It is an arithmetic number, because the mean of its divisors is an integer number (427772787).

Almost surely, 2^855545573 is an apocalyptic number.

It is an amenable number.

855545573 is a deficient number, since it is larger than the sum of its proper divisors (1).

855545573 is an equidigital number, since it uses as much as digits as its factorization.

855545573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2100000, while the sum is 47.

The square root of 855545573 is about 29249.7106481415. The cubic root of 855545573 is about 949.3238302025.

The spelling of 855545573 in words is "eight hundred fifty-five million, five hundred forty-five thousand, five hundred seventy-three".