80992577 has 2 divisors, whose sum is σ = 80992578. Its totient is φ = 80992576.

The previous prime is 80992547. The next prime is 80992579. The reversal of 80992577 is 77529908.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50566321 + 30426256 = 7111^2 + 5516^2 .

It is a cyclic number.

It is not a de Polignac number, because 80992577 - 2¹⁴ = 80976193 is a prime.

Together with 80992579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80992579) 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, 40496288 + 40496289.

It is an arithmetic number, because the mean of its divisors is an integer number (40496289).

Almost surely, 2^80992577 is an apocalyptic number.

It is an amenable number.

80992577 is a deficient number, since it is larger than the sum of its proper divisors (1).

80992577 is an equidigital number, since it uses as much as digits as its factorization.

80992577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 80992577 is about 8999.5876016626. The cubic root of 80992577 is about 432.6616536285.

The spelling of 80992577 in words is "eighty million, nine hundred ninety-two thousand, five hundred seventy-seven".