82255531 has 2 divisors, whose sum is σ = 82255532. Its totient is φ = 82255530.

The previous prime is 82255529. The next prime is 82255543. The reversal of 82255531 is 13555228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82255531 - 2¹ = 82255529 is a prime.

It is a super-2 number, since 2×82255531² = 13531944760183922, which contains 22 as substring.

Together with 82255529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 82255493 and 82255502.

It is not a weakly prime, because it can be changed into another prime (82255561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41127765 + 41127766.

It is an arithmetic number, because the mean of its divisors is an integer number (41127766).

Almost surely, 2^82255531 is an apocalyptic number.

82255531 is a deficient number, since it is larger than the sum of its proper divisors (1).

82255531 is an equidigital number, since it uses as much as digits as its factorization.

82255531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 31.

The square root of 82255531 is about 9069.4835023831. The cubic root of 82255531 is about 434.8989609873.

The spelling of 82255531 in words is "eighty-two million, two hundred fifty-five thousand, five hundred thirty-one".