80502791 has 4 divisors (see below), whose sum is σ = 84739800. Its totient is φ = 76265784.

The previous prime is 80502767. The next prime is 80502797. The reversal of 80502791 is 19720508.

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 80502791 - 2²⁶ = 13393927 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 (80502797) 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, 2118476 + ... + 2118513.

It is an arithmetic number, because the mean of its divisors is an integer number (21184950).

Almost surely, 2^80502791 is an apocalyptic number.

80502791 is a deficient number, since it is larger than the sum of its proper divisors (4237009).

80502791 is a wasteful number, since it uses less digits than its factorization.

80502791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4237008.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 80502791 is about 8972.3347574642. The cubic root of 80502791 is about 431.7877454529.

The spelling of 80502791 in words is "eighty million, five hundred two thousand, seven hundred ninety-one".