80544921 has 8 divisors (see below), whose sum is σ = 108996384. Its totient is φ = 52895040.

The previous prime is 80544917. The next prime is 80544941. The reversal of 80544921 is 12944508.

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

It is not a de Polignac number, because 80544921 - 2² = 80544917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80544901) 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 7 ways as a sum of consecutive naturals, for example, 200160 + ... + 200561.

It is an arithmetic number, because the mean of its divisors is an integer number (13624548).

Almost surely, 2^80544921 is an apocalyptic number.

It is an amenable number.

80544921 is a deficient number, since it is larger than the sum of its proper divisors (28451463).

80544921 is a wasteful number, since it uses less digits than its factorization.

80544921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400791.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 80544921 is about 8974.6822227865. The cubic root of 80544921 is about 431.8630556586.

The spelling of 80544921 in words is "eighty million, five hundred forty-four thousand, nine hundred twenty-one".