851330 has 8 divisors (see below), whose sum is σ = 1532412. Its totient is φ = 340528.

The previous prime is 851327. The next prime is 851351. The reversal of 851330 is 33158.

It can be written as a sum of positive squares in 2 ways, for example, as 790321 + 61009 = 889^2 + 247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 42557 + ... + 42576.

2⁸⁵¹³³⁰ is an apocalyptic number.

851330 is a deficient number, since it is larger than the sum of its proper divisors (681082).

851330 is a wasteful number, since it uses less digits than its factorization.

851330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85140.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 851330 is about 922.6754575689. The cubic root of 851330 is about 94.7762045115.

Adding to 851330 its reverse (33158), we get a palindrome (884488).

It can be divided in two parts, 85 and 1330, that multiplied together give a triangular number (113050 = T₄₇₅).

The spelling of 851330 in words is "eight hundred fifty-one thousand, three hundred thirty".