851551080 has 128 divisors (see below), whose sum is σ = 2822688000. Its totient is φ = 204419072.

The previous prime is 851551079. The next prime is 851551081. The reversal of 851551080 is 80155158.

It is an interprime number because it is at equal distance from previous prime (851551079) and next prime (851551081).

It is not an unprimeable number, because it can be changed into a prime (851551081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37846 + ... + 55994.

It is an arithmetic number, because the mean of its divisors is an integer number (22052250).

Almost surely, 2^851551080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851551080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1411344000).

851551080 is an abundant number, since it is smaller than the sum of its proper divisors (1971136920).

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

851551080 is a wasteful number, since it uses less digits than its factorization.

851551080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18203 (or 18199 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 33.

The square root of 851551080 is about 29181.3481525443. The cubic root of 851551080 is about 947.8440787557.

It can be divided in two parts, 8515 and 51080, that added together give a palindrome (59595).

The spelling of 851551080 in words is "eight hundred fifty-one million, five hundred fifty-one thousand, eighty".