80544533 has 2 divisors, whose sum is σ = 80544534. Its totient is φ = 80544532.

The previous prime is 80544491. The next prime is 80544559. The reversal of 80544533 is 33544508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70946929 + 9597604 = 8423^2 + 3098^2 .

It is a cyclic number.

It is not a de Polignac number, because 80544533 - 2¹⁰ = 80543509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80544533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80544593) 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 as a sum of consecutive naturals, namely, 40272266 + 40272267.

It is an arithmetic number, because the mean of its divisors is an integer number (40272267).

Almost surely, 2^80544533 is an apocalyptic number.

It is an amenable number.

80544533 is a deficient number, since it is larger than the sum of its proper divisors (1).

80544533 is an equidigital number, since it uses as much as digits as its factorization.

80544533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 80544533 is about 8974.6606063962. The cubic root of 80544533 is about 431.8623622024.

The spelling of 80544533 in words is "eighty million, five hundred forty-four thousand, five hundred thirty-three".