80355221 has 4 divisors (see below), whose sum is σ = 80433600. Its totient is φ = 80276844.

The previous prime is 80355167. The next prime is 80355257. The reversal of 80355221 is 12255308.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80355221 - 2²⁶ = 13246357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80355281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37631 + ... + 39708.

It is an arithmetic number, because the mean of its divisors is an integer number (20108400).

Almost surely, 2^80355221 is an apocalyptic number.

It is an amenable number.

80355221 is a deficient number, since it is larger than the sum of its proper divisors (78379).

80355221 is a wasteful number, since it uses less digits than its factorization.

80355221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78378.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 80355221 is about 8964.1073732971. The cubic root of 80355221 is about 431.5237467725.

The spelling of 80355221 in words is "eighty million, three hundred fifty-five thousand, two hundred twenty-one".