801205172 has 12 divisors (see below), whose sum is σ = 1484586180. Its totient is φ = 377037696.

The previous prime is 801205169. The next prime is 801205201. The reversal of 801205172 is 271502108.

It can be written as a sum of positive squares in 2 ways, for example, as 551122576 + 250082596 = 23476^2 + 15814^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5891147 + ... + 5891282.

It is an arithmetic number, because the mean of its divisors is an integer number (123715515).

Almost surely, 2^801205172 is an apocalyptic number.

It is an amenable number.

801205172 is a deficient number, since it is larger than the sum of its proper divisors (683381008).

801205172 is a wasteful number, since it uses less digits than its factorization.

801205172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11782450 (or 11782448 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 801205172 is about 28305.5678621716. The cubic root of 801205172 is about 928.7836922421.

The spelling of 801205172 in words is "eight hundred one million, two hundred five thousand, one hundred seventy-two".