855505529 has 2 divisors, whose sum is σ = 855505530. Its totient is φ = 855505528.

The previous prime is 855505517. The next prime is 855505559. The reversal of 855505529 is 925505558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855445504 + 60025 = 29248^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 855505529 - 2²⁴ = 838728313 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 855505529.

It is not a weakly prime, because it can be changed into another prime (855505559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427752764 + 427752765.

It is an arithmetic number, because the mean of its divisors is an integer number (427752765).

Almost surely, 2^855505529 is an apocalyptic number.

It is an amenable number.

855505529 is a deficient number, since it is larger than the sum of its proper divisors (1).

855505529 is an equidigital number, since it uses as much as digits as its factorization.

855505529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450000, while the sum is 44.

The square root of 855505529 is about 29249.0261205395. The cubic root of 855505529 is about 949.3090188674.

The spelling of 855505529 in words is "eight hundred fifty-five million, five hundred five thousand, five hundred twenty-nine".