80221531 has 8 divisors (see below), whose sum is σ = 88402160. Its totient is φ = 72328032.

The previous prime is 80221523. The next prime is 80221549. The reversal of 80221531 is 13512208.

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

It is a cyclic number.

It is not a de Polignac number, because 80221531 - 2³ = 80221523 is a prime.

It is a super-2 number, since 2×80221531² = 12870988071967922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80221571) 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, 71196 + ... + 72313.

It is an arithmetic number, because the mean of its divisors is an integer number (11050270).

Almost surely, 2^80221531 is an apocalyptic number.

80221531 is a deficient number, since it is larger than the sum of its proper divisors (8180629).

80221531 is a wasteful number, since it uses less digits than its factorization.

80221531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143565.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 80221531 is about 8956.6473080054. The cubic root of 80221531 is about 431.2842998413.

Adding to 80221531 its reverse (13512208), we get a palindrome (93733739).

The spelling of 80221531 in words is "eighty million, two hundred twenty-one thousand, five hundred thirty-one".