80534543 has 2 divisors, whose sum is σ = 80534544. Its totient is φ = 80534542.

The previous prime is 80534527. The next prime is 80534557. The reversal of 80534543 is 34543508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80534543 - 2⁴ = 80534527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80534143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40267271 + 40267272.

It is an arithmetic number, because the mean of its divisors is an integer number (40267272).

Almost surely, 2^80534543 is an apocalyptic number.

80534543 is a deficient number, since it is larger than the sum of its proper divisors (1).

80534543 is an equidigital number, since it uses as much as digits as its factorization.

80534543 is an evil number, because the sum of its binary digits is even.

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

The square root of 80534543 is about 8974.1040221295. The cubic root of 80534543 is about 431.8445067245.

The spelling of 80534543 in words is "eighty million, five hundred thirty-four thousand, five hundred forty-three".