80220531 has 4 divisors (see below), whose sum is σ = 106960712. Its totient is φ = 53480352.

The previous prime is 80220521. The next prime is 80220533. The reversal of 80220531 is 13502208.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 80220531 - 2¹⁸ = 79958387 is a prime.

It is a super-2 number, since 2×80220531² = 12870667187843922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80220498 and 80220507.

It is not an unprimeable number, because it can be changed into a prime (80220533) 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, 13370086 + ... + 13370091.

It is an arithmetic number, because the mean of its divisors is an integer number (26740178).

Almost surely, 2^80220531 is an apocalyptic number.

80220531 is a deficient number, since it is larger than the sum of its proper divisors (26740181).

80220531 is a wasteful number, since it uses less digits than its factorization.

80220531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26740180.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 80220531 is about 8956.5914833713. The cubic root of 80220531 is about 431.2825077784.

Adding to 80220531 its reverse (13502208), we get a palindrome (93722739).

The spelling of 80220531 in words is "eighty million, two hundred twenty thousand, five hundred thirty-one".