80523871 has 4 divisors (see below), whose sum is σ = 81354112. Its totient is φ = 79693632.

The previous prime is 80523829. The next prime is 80523929. The reversal of 80523871 is 17832508.

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 80523871 - 2⁷ = 80523743 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 (80523071) 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, 414975 + ... + 415168.

It is an arithmetic number, because the mean of its divisors is an integer number (20338528).

Almost surely, 2^80523871 is an apocalyptic number.

80523871 is a deficient number, since it is larger than the sum of its proper divisors (830241).

80523871 is an equidigital number, since it uses as much as digits as its factorization.

80523871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830240.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 80523871 is about 8973.5094026808. The cubic root of 80523871 is about 431.8254306528.

The spelling of 80523871 in words is "eighty million, five hundred twenty-three thousand, eight hundred seventy-one".