80221505 has 32 divisors (see below), whose sum is σ = 119341824. Its totient is φ = 50409216.

The previous prime is 80221499. The next prime is 80221507. The reversal of 80221505 is 50512208.

It is not a de Polignac number, because 80221505 - 2⁶ = 80221441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80221507) 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, 70874 + ... + 71996.

It is an arithmetic number, because the mean of its divisors is an integer number (3729432).

Almost surely, 2^80221505 is an apocalyptic number.

It is an amenable number.

80221505 is a deficient number, since it is larger than the sum of its proper divisors (39120319).

80221505 is a wasteful number, since it uses less digits than its factorization.

80221505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 80221505 is about 8956.6458565693. The cubic root of 80221505 is about 431.2842532479.

The spelling of 80221505 in words is "eighty million, two hundred twenty-one thousand, five hundred five".