82149497 has 2 divisors, whose sum is σ = 82149498. Its totient is φ = 82149496.

The previous prime is 82149481. The next prime is 82149517. The reversal of 82149497 is 79494128.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43349056 + 38800441 = 6584^2 + 6229^2 .

It is a cyclic number.

It is not a de Polignac number, because 82149497 - 2⁴ = 82149481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82140497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41074748 + 41074749.

It is an arithmetic number, because the mean of its divisors is an integer number (41074749).

Almost surely, 2^82149497 is an apocalyptic number.

It is an amenable number.

82149497 is a deficient number, since it is larger than the sum of its proper divisors (1).

82149497 is an equidigital number, since it uses as much as digits as its factorization.

82149497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 82149497 is about 9063.6359701833. The cubic root of 82149497 is about 434.7120073766.

The spelling of 82149497 in words is "eighty-two million, one hundred forty-nine thousand, four hundred ninety-seven".