82255619 has 2 divisors, whose sum is σ = 82255620. Its totient is φ = 82255618.

The previous prime is 82255609. The next prime is 82255637. The reversal of 82255619 is 91655228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82255619 - 2⁸ = 82255363 is a prime.

It is a super-2 number, since 2×82255619² = 13531973714146322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (82255609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41127809 + 41127810.

It is an arithmetic number, because the mean of its divisors is an integer number (41127810).

Almost surely, 2^82255619 is an apocalyptic number.

82255619 is a deficient number, since it is larger than the sum of its proper divisors (1).

82255619 is an equidigital number, since it uses as much as digits as its factorization.

82255619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 38.

The square root of 82255619 is about 9069.4883538158. The cubic root of 82255619 is about 434.8991160775.

The spelling of 82255619 in words is "eighty-two million, two hundred fifty-five thousand, six hundred nineteen".