80587221 has 32 divisors (see below), whose sum is σ = 129671808. Its totient is φ = 43856640.

The previous prime is 80587217. The next prime is 80587229. The reversal of 80587221 is 12278508.

It is not a de Polignac number, because 80587221 - 2² = 80587217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80587229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13335 + ... + 18411.

It is an arithmetic number, because the mean of its divisors is an integer number (4052244).

Almost surely, 2^80587221 is an apocalyptic number.

It is an amenable number.

80587221 is a deficient number, since it is larger than the sum of its proper divisors (49084587).

80587221 is a wasteful number, since it uses less digits than its factorization.

80587221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5141.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 80587221 is about 8977.0385428603. The cubic root of 80587221 is about 431.9386433350.

It can be divided in two parts, 80587 and 221, that added together give a palindrome (80808).

The spelling of 80587221 in words is "eighty million, five hundred eighty-seven thousand, two hundred twenty-one".