82566131 has 2 divisors, whose sum is σ = 82566132. Its totient is φ = 82566130.

The previous prime is 82566119. The next prime is 82566151. The reversal of 82566131 is 13166528.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82566131 is a prime.

It is a super-2 number, since 2×82566131² = 13634331976618322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82566151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41283065 + 41283066.

It is an arithmetic number, because the mean of its divisors is an integer number (41283066).

Almost surely, 2^82566131 is an apocalyptic number.

82566131 is a deficient number, since it is larger than the sum of its proper divisors (1).

82566131 is an equidigital number, since it uses as much as digits as its factorization.

82566131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 82566131 is about 9086.5907247988. The cubic root of 82566131 is about 435.4456717454.

The spelling of 82566131 in words is "eighty-two million, five hundred sixty-six thousand, one hundred thirty-one".