80889577 has 2 divisors, whose sum is σ = 80889578. Its totient is φ = 80889576.

The previous prime is 80889547. The next prime is 80889583. The reversal of 80889577 is 77598808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56791296 + 24098281 = 7536^2 + 4909^2 .

It is a cyclic number.

It is not a de Polignac number, because 80889577 - 2²³ = 72500969 is a prime.

It is not a weakly prime, because it can be changed into another prime (80889527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40444788 + 40444789.

It is an arithmetic number, because the mean of its divisors is an integer number (40444789).

Almost surely, 2^80889577 is an apocalyptic number.

It is an amenable number.

80889577 is a deficient number, since it is larger than the sum of its proper divisors (1).

80889577 is an equidigital number, since it uses as much as digits as its factorization.

80889577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 52.

The square root of 80889577 is about 8993.8632967152. The cubic root of 80889577 is about 432.4781674524.

The spelling of 80889577 in words is "eighty million, eight hundred eighty-nine thousand, five hundred seventy-seven".