80755221 has 4 divisors (see below), whose sum is σ = 107673632. Its totient is φ = 53836812.

The previous prime is 80755211. The next prime is 80755243. The reversal of 80755221 is 12255708.

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 de Polignac number, because none of the positive numbers 2^k-80755221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80755211) 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 3 ways as a sum of consecutive naturals, for example, 13459201 + ... + 13459206.

It is an arithmetic number, because the mean of its divisors is an integer number (26918408).

Almost surely, 2^80755221 is an apocalyptic number.

It is an amenable number.

80755221 is a deficient number, since it is larger than the sum of its proper divisors (26918411).

80755221 is a wasteful number, since it uses less digits than its factorization.

80755221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26918410.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 80755221 is about 8986.3908773211. The cubic root of 80755221 is about 432.2385888419.

The spelling of 80755221 in words is "eighty million, seven hundred fifty-five thousand, two hundred twenty-one".