80591873 has 2 divisors, whose sum is σ = 80591874. Its totient is φ = 80591872.

The previous prime is 80591851. The next prime is 80591881. The reversal of 80591873 is 37819508.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60949249 + 19642624 = 7807^2 + 4432^2 .

It is a cyclic number.

It is not a de Polignac number, because 80591873 - 2¹² = 80587777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80591873.

It is not a weakly prime, because it can be changed into another prime (80591803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40295936 + 40295937.

It is an arithmetic number, because the mean of its divisors is an integer number (40295937).

Almost surely, 2^80591873 is an apocalyptic number.

It is an amenable number.

80591873 is a deficient number, since it is larger than the sum of its proper divisors (1).

80591873 is an equidigital number, since it uses as much as digits as its factorization.

80591873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 80591873 is about 8977.2976446144. The cubic root of 80591873 is about 431.9469545779.

The spelling of 80591873 in words is "eighty million, five hundred ninety-one thousand, eight hundred seventy-three".