814852221 has 16 divisors (see below), whose sum is σ = 1174564800. Its totient is φ = 500732928.

The previous prime is 814852189. The next prime is 814852223. The reversal of 814852221 is 122258418.

It is not a de Polignac number, because 814852221 - 2⁵ = 814852189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814852223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191076 + ... + 195293.

It is an arithmetic number, because the mean of its divisors is an integer number (73410300).

Almost surely, 2^814852221 is an apocalyptic number.

It is an amenable number.

814852221 is a deficient number, since it is larger than the sum of its proper divisors (359712579).

814852221 is a wasteful number, since it uses less digits than its factorization.

814852221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386428.

The product of its digits is 10240, while the sum is 33.

The square root of 814852221 is about 28545.6164936055. The cubic root of 814852221 is about 934.0274027637.

The spelling of 814852221 in words is "eight hundred fourteen million, eight hundred fifty-two thousand, two hundred twenty-one".