80997043 has 4 divisors (see below), whose sum is σ = 81465408. Its totient is φ = 80528680.

The previous prime is 80997023. The next prime is 80997067. The reversal of 80997043 is 34079908.

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

It is a cyclic number.

It is not a de Polignac number, because 80997043 - 2¹⁷ = 80865971 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80996987 and 80997005.

It is not an unprimeable number, because it can be changed into a prime (80997023) 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, 233923 + ... + 234268.

It is an arithmetic number, because the mean of its divisors is an integer number (20366352).

Almost surely, 2^80997043 is an apocalyptic number.

80997043 is a deficient number, since it is larger than the sum of its proper divisors (468365).

80997043 is a wasteful number, since it uses less digits than its factorization.

80997043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468364.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 80997043 is about 8999.8357207229. The cubic root of 80997043 is about 432.6696059269.

The spelling of 80997043 in words is "eighty million, nine hundred ninety-seven thousand, forty-three".