80355533 has 2 divisors, whose sum is σ = 80355534. Its totient is φ = 80355532.

The previous prime is 80355529. The next prime is 80355547. The reversal of 80355533 is 33555308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80335369 + 20164 = 8963^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 80355533 - 2² = 80355529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80355533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80355523) 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, 40177766 + 40177767.

It is an arithmetic number, because the mean of its divisors is an integer number (40177767).

Almost surely, 2^80355533 is an apocalyptic number.

It is an amenable number.

80355533 is a deficient number, since it is larger than the sum of its proper divisors (1).

80355533 is an equidigital number, since it uses as much as digits as its factorization.

80355533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 80355533 is about 8964.1247760169. The cubic root of 80355533 is about 431.5243052728.

The spelling of 80355533 in words is "eighty million, three hundred fifty-five thousand, five hundred thirty-three".