82777853 has 2 divisors, whose sum is σ = 82777854. Its totient is φ = 82777852.

The previous prime is 82777847. The next prime is 82777873. The reversal of 82777853 is 35877728.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50310649 + 32467204 = 7093^2 + 5698^2 .

It is a cyclic number.

It is not a de Polignac number, because 82777853 - 2⁴ = 82777837 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 82777798 and 82777807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82777873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41388926 + 41388927.

It is an arithmetic number, because the mean of its divisors is an integer number (41388927).

Almost surely, 2^82777853 is an apocalyptic number.

It is an amenable number.

82777853 is a deficient number, since it is larger than the sum of its proper divisors (1).

82777853 is an equidigital number, since it uses as much as digits as its factorization.

82777853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 658560, while the sum is 47.

The square root of 82777853 is about 9098.2335098633. The cubic root of 82777853 is about 435.8175544067.

The spelling of 82777853 in words is "eighty-two million, seven hundred seventy-seven thousand, eight hundred fifty-three".