82517783 has 2 divisors, whose sum is σ = 82517784. Its totient is φ = 82517782.

The previous prime is 82517777. The next prime is 82517801. The reversal of 82517783 is 38771528.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82517783 - 2⁸ = 82517527 is a prime.

It is a super-2 number, since 2×82517783² = 13618369022470178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82517783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82517723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41258891 + 41258892.

It is an arithmetic number, because the mean of its divisors is an integer number (41258892).

Almost surely, 2^82517783 is an apocalyptic number.

82517783 is a deficient number, since it is larger than the sum of its proper divisors (1).

82517783 is an equidigital number, since it uses as much as digits as its factorization.

82517783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 41.

The square root of 82517783 is about 9083.9299314779. The cubic root of 82517783 is about 435.3606609477.

The spelling of 82517783 in words is "eighty-two million, five hundred seventeen thousand, seven hundred eighty-three".