80215589 has 2 divisors, whose sum is σ = 80215590. Its totient is φ = 80215588.

The previous prime is 80215567. The next prime is 80215621. The reversal of 80215589 is 98551208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67930564 + 12285025 = 8242^2 + 3505^2 .

It is a cyclic number.

It is not a de Polignac number, because 80215589 - 2¹² = 80211493 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80265589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40107794 + 40107795.

It is an arithmetic number, because the mean of its divisors is an integer number (40107795).

Almost surely, 2^80215589 is an apocalyptic number.

It is an amenable number.

80215589 is a deficient number, since it is larger than the sum of its proper divisors (1).

80215589 is an equidigital number, since it uses as much as digits as its factorization.

80215589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 80215589 is about 8956.3155929210. The cubic root of 80215589 is about 431.2736511848.

The spelling of 80215589 in words is "eighty million, two hundred fifteen thousand, five hundred eighty-nine".