855628550 has 24 divisors (see below), whose sum is σ = 1818822576. Its totient is φ = 293358240.

The previous prime is 855628531. The next prime is 855628567. The reversal of 855628550 is 55826558.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1221977 + ... + 1222676.

It is an arithmetic number, because the mean of its divisors is an integer number (75784274).

Almost surely, 2^855628550 is an apocalyptic number.

855628550 is an abundant number, since it is smaller than the sum of its proper divisors (963194026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855628550 is a wasteful number, since it uses less digits than its factorization.

855628550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444672 (or 2444667 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 44.

The square root of 855628550 is about 29251.1290380389. The cubic root of 855628550 is about 949.3545199750.

The spelling of 855628550 in words is "eight hundred fifty-five million, six hundred twenty-eight thousand, five hundred fifty".