80221557 has 8 divisors (see below), whose sum is σ = 115189984. Its totient is φ = 49367088.

The previous prime is 80221549. The next prime is 80221571. The reversal of 80221557 is 75512208.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80221557 - 2³ = 80221549 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1028443 + ... + 1028520.

It is an arithmetic number, because the mean of its divisors is an integer number (14398748).

Almost surely, 2^80221557 is an apocalyptic number.

It is an amenable number.

80221557 is a deficient number, since it is larger than the sum of its proper divisors (34968427).

80221557 is a wasteful number, since it uses less digits than its factorization.

80221557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056979.

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

The square root of 80221557 is about 8956.6487594412. The cubic root of 80221557 is about 431.2843464348.

The spelling of 80221557 in words is "eighty million, two hundred twenty-one thousand, five hundred fifty-seven".