80808591 has 32 divisors (see below), whose sum is σ = 116278272. Its totient is φ = 49800960.

The previous prime is 80808571. The next prime is 80808601. The reversal of 80808591 is 19580808.

It is not a de Polignac number, because 80808591 - 2¹⁰ = 80807567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80808571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307126 + ... + 307388.

It is an arithmetic number, because the mean of its divisors is an integer number (3633696).

Almost surely, 2^80808591 is an apocalyptic number.

80808591 is a deficient number, since it is larger than the sum of its proper divisors (35469681).

80808591 is a wasteful number, since it uses less digits than its factorization.

80808591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423.

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 80808591 is about 8989.3598770991. The cubic root of 80808591 is about 432.3337880260. Note that the first 3 decimals are identical.

The spelling of 80808591 in words is "eighty million, eight hundred eight thousand, five hundred ninety-one".