82510291 has 2 divisors, whose sum is σ = 82510292. Its totient is φ = 82510290.

The previous prime is 82510277. The next prime is 82510297. The reversal of 82510291 is 19201528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82510291 - 2¹³ = 82502099 is a prime.

It is not a weakly prime, because it can be changed into another prime (82510297) 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, 41255145 + 41255146.

It is an arithmetic number, because the mean of its divisors is an integer number (41255146).

Almost surely, 2^82510291 is an apocalyptic number.

82510291 is a deficient number, since it is larger than the sum of its proper divisors (1).

82510291 is an equidigital number, since it uses as much as digits as its factorization.

82510291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 82510291 is about 9083.5175455327. The cubic root of 82510291 is about 435.3474847140.

The spelling of 82510291 in words is "eighty-two million, five hundred ten thousand, two hundred ninety-one".