851552 has 48 divisors (see below), whose sum is σ = 1905120. Its totient is φ = 371712.

The previous prime is 851549. The next prime is 851569. The reversal of 851552 is 255158.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9524 + ... + 9612.

It is an arithmetic number, because the mean of its divisors is an integer number (39690).

2⁸⁵¹⁵⁵² 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 851552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952560).

851552 is an abundant number, since it is smaller than the sum of its proper divisors (1053568).

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

851552 is a wasteful number, since it uses less digits than its factorization.

851552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 127 counting only the distinct ones).

The product of its digits is 2000, while the sum is 26.

The square root of 851552 is about 922.7957520492. The cubic root of 851552 is about 94.7844420100.

The spelling of 851552 in words is "eight hundred fifty-one thousand, five hundred fifty-two".