80211091 has 2 divisors, whose sum is σ = 80211092. Its totient is φ = 80211090.

The previous prime is 80211073. The next prime is 80211107. The reversal of 80211091 is 19011208.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80211091 - 2⁵ = 80211059 is a prime.

It is not a weakly prime, because it can be changed into another prime (80214091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40105545 + 40105546.

It is an arithmetic number, because the mean of its divisors is an integer number (40105546).

Almost surely, 2^80211091 is an apocalyptic number.

80211091 is a deficient number, since it is larger than the sum of its proper divisors (1).

80211091 is an equidigital number, since it uses as much as digits as its factorization.

80211091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 80211091 is about 8956.0644816794. The cubic root of 80211091 is about 431.2655899706.

Adding to 80211091 its reverse (19011208), we get a palindrome (99222299).

The spelling of 80211091 in words is "eighty million, two hundred eleven thousand, ninety-one".