80801543 has 4 divisors (see below), whose sum is σ = 81586128. Its totient is φ = 80016960.

The previous prime is 80801537. The next prime is 80801563. The reversal of 80801543 is 34510808.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80801543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80801533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392138 + ... + 392343.

It is an arithmetic number, because the mean of its divisors is an integer number (20396532).

Almost surely, 2^80801543 is an apocalyptic number.

80801543 is a deficient number, since it is larger than the sum of its proper divisors (784585).

80801543 is a wasteful number, since it uses less digits than its factorization.

80801543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784584.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 80801543 is about 8988.9678495365. The cubic root of 80801543 is about 432.3212184997.

The spelling of 80801543 in words is "eighty million, eight hundred one thousand, five hundred forty-three".