850255551 has 6 divisors (see below), whose sum is σ = 1228146920. Its totient is φ = 566837028.

The previous prime is 850255543. The next prime is 850255573. The reversal of 850255551 is 155552058.

850255551 is a `hidden beast` number, since 8 + 50 + 2 + 55 + 551 = 666.

It is not a de Polignac number, because 850255551 - 2³ = 850255543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850255151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47236411 + ... + 47236428.

Almost surely, 2^850255551 is an apocalyptic number.

850255551 is a deficient number, since it is larger than the sum of its proper divisors (377891369).

850255551 is a wasteful number, since it uses less digits than its factorization.

850255551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94472845 (or 94472842 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 36.

The square root of 850255551 is about 29159.1418083592. The cubic root of 850255551 is about 947.3631591818.

The spelling of 850255551 in words is "eight hundred fifty million, two hundred fifty-five thousand, five hundred fifty-one".