82987547 has 2 divisors, whose sum is σ = 82987548. Its totient is φ = 82987546.

The previous prime is 82987537. The next prime is 82987601. The reversal of 82987547 is 74578928.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82987547 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 82987495 and 82987504.

It is not a weakly prime, because it can be changed into another prime (82987507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41493773 + 41493774.

It is an arithmetic number, because the mean of its divisors is an integer number (41493774).

Almost surely, 2^82987547 is an apocalyptic number.

82987547 is a deficient number, since it is larger than the sum of its proper divisors (1).

82987547 is an equidigital number, since it uses as much as digits as its factorization.

82987547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 50.

The square root of 82987547 is about 9109.7501063421. The cubic root of 82987547 is about 436.1852504455.

The spelling of 82987547 in words is "eighty-two million, nine hundred eighty-seven thousand, five hundred forty-seven".