855500555 has 96 divisors (see below), whose sum is σ = 1380476160. Its totient is φ = 502951680.

The previous prime is 855500549. The next prime is 855500557. The reversal of 855500555 is 555005558.

It is not a de Polignac number, because 855500555 - 2¹⁰ = 855499531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (855500557) 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 in 95 ways as a sum of consecutive naturals, for example, 4054400 + ... + 4054610.

It is an arithmetic number, because the mean of its divisors is an integer number (14379960).

Almost surely, 2^855500555 is an apocalyptic number.

855500555 is a deficient number, since it is larger than the sum of its proper divisors (524975605).

855500555 is a wasteful number, since it uses less digits than its factorization.

855500555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 125000, while the sum is 38.

The square root of 855500555 is about 29248.9410919438. The cubic root of 855500555 is about 949.3071790693.

The spelling of 855500555 in words is "eight hundred fifty-five million, five hundred thousand, five hundred fifty-five".