80550081 has 12 divisors (see below), whose sum is σ = 120362580. Its totient is φ = 51848160.

The previous prime is 80550079. The next prime is 80550091. The reversal of 80550081 is 18005508.

80550081 is a `hidden beast` number, since 80 + 5 + 500 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25553025 + 54997056 = 5055^2 + 7416^2 .

It is not a de Polignac number, because 80550081 - 2¹ = 80550079 is a prime.

It is a super-2 number, since 2×80550081² = 12976631098213122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80550091) 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 11 ways as a sum of consecutive naturals, for example, 154050 + ... + 154571.

It is an arithmetic number, because the mean of its divisors is an integer number (10030215).

Almost surely, 2^80550081 is an apocalyptic number.

It is an amenable number.

80550081 is a deficient number, since it is larger than the sum of its proper divisors (39812499).

80550081 is a wasteful number, since it uses less digits than its factorization.

80550081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308656 (or 308653 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 80550081 is about 8974.9696935421. The cubic root of 80550081 is about 431.8722777000.

Adding to 80550081 its reverse (18005508), we get a palindrome (98555589).

The spelling of 80550081 in words is "eighty million, five hundred fifty thousand, eighty-one".