83555317 has 2 divisors, whose sum is σ = 83555318. Its totient is φ = 83555316.

The previous prime is 83555291. The next prime is 83555347. The reversal of 83555317 is 71355538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83283876 + 271441 = 9126^2 + 521^2 .

It is a cyclic number.

It is not a de Polignac number, because 83555317 - 2¹⁹ = 83031029 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83555347) 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, 41777658 + 41777659.

It is an arithmetic number, because the mean of its divisors is an integer number (41777659).

Almost surely, 2^83555317 is an apocalyptic number.

It is an amenable number.

83555317 is a deficient number, since it is larger than the sum of its proper divisors (1).

83555317 is an equidigital number, since it uses as much as digits as its factorization.

83555317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 37.

The square root of 83555317 is about 9140.8597516864. The cubic root of 83555317 is about 437.1777296886.

It can be divided in two parts, 8355531 and 7, that added together give a palindrome (8355538).

The spelling of 83555317 in words is "eighty-three million, five hundred fifty-five thousand, three hundred seventeen".