84551317 has 2 divisors, whose sum is σ = 84551318. Its totient is φ = 84551316.

The previous prime is 84551297. The next prime is 84551329. The reversal of 84551317 is 71315548.

It is a happy number.

84551317 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45037521 + 39513796 = 6711^2 + 6286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84551317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84551347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42275658 + 42275659.

It is an arithmetic number, because the mean of its divisors is an integer number (42275659).

Almost surely, 2^84551317 is an apocalyptic number.

It is an amenable number.

84551317 is a deficient number, since it is larger than the sum of its proper divisors (1).

84551317 is an equidigital number, since it uses as much as digits as its factorization.

84551317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 34.

The square root of 84551317 is about 9195.1790085892. The cubic root of 84551317 is about 438.9079616724.

The spelling of 84551317 in words is "eighty-four million, five hundred fifty-one thousand, three hundred seventeen".