82278587 has 2 divisors, whose sum is σ = 82278588. Its totient is φ = 82278586.

The previous prime is 82278551. The next prime is 82278593. The reversal of 82278587 is 78587228.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82278587 - 2⁶ = 82278523 is a prime.

It is not a weakly prime, because it can be changed into another prime (82278527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41139293 + 41139294.

It is an arithmetic number, because the mean of its divisors is an integer number (41139294).

Almost surely, 2^82278587 is an apocalyptic number.

82278587 is a deficient number, since it is larger than the sum of its proper divisors (1).

82278587 is an equidigital number, since it uses as much as digits as its factorization.

82278587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 501760, while the sum is 47.

The square root of 82278587 is about 9070.7544890158. The cubic root of 82278587 is about 434.9395908538.

The spelling of 82278587 in words is "eighty-two million, two hundred seventy-eight thousand, five hundred eighty-seven".