801580221 has 12 divisors (see below), whose sum is σ = 1246902748. Its totient is φ = 493280064.

The previous prime is 801580201. The next prime is 801580301. The reversal of 801580221 is 122085108.

801580221 is a `hidden beast` number, since 80 + 1 + 580 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 306740196 + 494840025 = 17514^2 + 22245^2 .

It is not a de Polignac number, because 801580221 - 2¹⁴ = 801563837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801580201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3425440 + ... + 3425673.

Almost surely, 2^801580221 is an apocalyptic number.

It is an amenable number.

801580221 is a deficient number, since it is larger than the sum of its proper divisors (445322527).

801580221 is a wasteful number, since it uses less digits than its factorization.

801580221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6851132 (or 6851129 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 801580221 is about 28312.1920910409. The cubic root of 801580221 is about 928.9285927279.

The spelling of 801580221 in words is "eight hundred one million, five hundred eighty thousand, two hundred twenty-one".