851250 has 40 divisors (see below), whose sum is σ = 2136816. Its totient is φ = 226000.

The previous prime is 851239. The next prime is 851251. The reversal of 851250 is 52158.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (851251) by changing a digit.

851250 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3637 + ... + 3863.

2⁸⁵¹²⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1068408).

851250 is an abundant number, since it is smaller than the sum of its proper divisors (1285566).

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

851250 is a wasteful number, since it uses less digits than its factorization.

851250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 851250 is about 922.6321043623. The cubic root of 851250 is about 94.7732356926.

The spelling of 851250 in words is "eight hundred fifty-one thousand, two hundred fifty".