851466321 has 6 divisors (see below), whose sum is σ = 1229895810. Its totient is φ = 567644208.

The previous prime is 851466313. The next prime is 851466337. The reversal of 851466321 is 123664158.

It is a happy number.

851466321 is a `hidden beast` number, since 8 + 5 + 14 + 6 + 632 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 577729296 + 273737025 = 24036^2 + 16545^2 .

It is not a de Polignac number, because 851466321 - 2³ = 851466313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (851466391) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 47303676 + ... + 47303693.

It is an arithmetic number, because the mean of its divisors is an integer number (204982635).

Almost surely, 2^851466321 is an apocalyptic number.

It is an amenable number.

851466321 is a deficient number, since it is larger than the sum of its proper divisors (378429489).

851466321 is a wasteful number, since it uses less digits than its factorization.

851466321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94607375 (or 94607372 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 851466321 is about 29179.8958360033. The cubic root of 851466321 is about 947.8126298762.

The spelling of 851466321 in words is "eight hundred fifty-one million, four hundred sixty-six thousand, three hundred twenty-one".