82785259 has 2 divisors, whose sum is σ = 82785260. Its totient is φ = 82785258.

The previous prime is 82785253. The next prime is 82785271. The reversal of 82785259 is 95258728.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82785259 - 2³ = 82785251 is a prime.

It is not a weakly prime, because it can be changed into another prime (82785251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41392629 + 41392630.

It is an arithmetic number, because the mean of its divisors is an integer number (41392630).

Almost surely, 2^82785259 is an apocalyptic number.

82785259 is a deficient number, since it is larger than the sum of its proper divisors (1).

82785259 is an equidigital number, since it uses as much as digits as its factorization.

82785259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 46.

The square root of 82785259 is about 9098.6405028444. The cubic root of 82785259 is about 435.8305513152.

The spelling of 82785259 in words is "eighty-two million, seven hundred eighty-five thousand, two hundred fifty-nine".