851848520 has 32 divisors (see below), whose sum is σ = 1917907200. Its totient is φ = 340517568.

The previous prime is 851848477. The next prime is 851848537. The reversal of 851848520 is 25848158.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 64307 + ... + 76413.

It is an arithmetic number, because the mean of its divisors is an integer number (59934600).

Almost surely, 2^851848520 is an apocalyptic number.

It is an amenable number.

851848520 is an abundant number, since it is smaller than the sum of its proper divisors (1066058680).

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

851848520 is a wasteful number, since it uses less digits than its factorization.

851848520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13877 (or 13873 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 41.

The square root of 851848520 is about 29186.4441136635. Note that the first 3 decimals coincide. The cubic root of 851848520 is about 947.9544240345.

The spelling of 851848520 in words is "eight hundred fifty-one million, eight hundred forty-eight thousand, five hundred twenty".