80043557 has 6 divisors (see below), whose sum is σ = 87981894. Its totient is φ = 72766760.

The previous prime is 80043547. The next prime is 80043563. The reversal of 80043557 is 75534008.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 78605956 + 1437601 = 8866^2 + 1199^2 .

It is not a de Polignac number, because 80043557 - 2²² = 75849253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80043547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 330638 + ... + 330879.

It is an arithmetic number, because the mean of its divisors is an integer number (14663649).

Almost surely, 2^80043557 is an apocalyptic number.

It is an amenable number.

80043557 is a deficient number, since it is larger than the sum of its proper divisors (7938337).

80043557 is a wasteful number, since it uses less digits than its factorization.

80043557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661539 (or 661528 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 80043557 is about 8946.7064889824. The cubic root of 80043557 is about 430.9651244114.

The spelling of 80043557 in words is "eighty million, forty-three thousand, five hundred fifty-seven".