82772831 has 2 divisors, whose sum is σ = 82772832. Its totient is φ = 82772830.

The previous prime is 82772827. The next prime is 82772843. The reversal of 82772831 is 13827728.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82772831 - 2² = 82772827 is a prime.

It is a super-2 number, since 2×82772831² = 13702683103509122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82772231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41386415 + 41386416.

It is an arithmetic number, because the mean of its divisors is an integer number (41386416).

Almost surely, 2^82772831 is an apocalyptic number.

82772831 is a deficient number, since it is larger than the sum of its proper divisors (1).

82772831 is an equidigital number, since it uses as much as digits as its factorization.

82772831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 38.

The square root of 82772831 is about 9097.9575180367. The cubic root of 82772831 is about 435.8087407770.

The spelling of 82772831 in words is "eighty-two million, seven hundred seventy-two thousand, eight hundred thirty-one".