82481779 has 2 divisors, whose sum is σ = 82481780. Its totient is φ = 82481778.

The previous prime is 82481753. The next prime is 82481813. The reversal of 82481779 is 97718428.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82481779 - 2⁵ = 82481747 is a prime.

It is not a weakly prime, because it can be changed into another prime (82481279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41240889 + 41240890.

It is an arithmetic number, because the mean of its divisors is an integer number (41240890).

Almost surely, 2^82481779 is an apocalyptic number.

82481779 is a deficient number, since it is larger than the sum of its proper divisors (1).

82481779 is an equidigital number, since it uses as much as digits as its factorization.

82481779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 46.

The square root of 82481779 is about 9081.9479738655. The cubic root of 82481779 is about 435.2973331617.

The spelling of 82481779 in words is "eighty-two million, four hundred eighty-one thousand, seven hundred seventy-nine".