82791097 has 2 divisors, whose sum is σ = 82791098. Its totient is φ = 82791096.

The previous prime is 82791073. The next prime is 82791103. The reversal of 82791097 is 79019728.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56791296 + 25999801 = 7536^2 + 5099^2 .

It is a cyclic number.

It is not a de Polignac number, because 82791097 - 2¹⁹ = 82266809 is a prime.

It is not a weakly prime, because it can be changed into another prime (82791047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41395548 + 41395549.

It is an arithmetic number, because the mean of its divisors is an integer number (41395549).

Almost surely, 2^82791097 is an apocalyptic number.

It is an amenable number.

82791097 is a deficient number, since it is larger than the sum of its proper divisors (1).

82791097 is an equidigital number, since it uses as much as digits as its factorization.

82791097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 82791097 is about 9098.9613143479. The cubic root of 82791097 is about 435.8407959690.

The spelling of 82791097 in words is "eighty-two million, seven hundred ninety-one thousand, ninety-seven".