72183317 has 2 divisors, whose sum is σ = 72183318. Its totient is φ = 72183316.

The previous prime is 72183257. The next prime is 72183323. The reversal of 72183317 is 71338127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69989956 + 2193361 = 8366^2 + 1481^2 .

It is a cyclic number.

It is not a de Polignac number, because 72183317 - 2⁶ = 72183253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72183347) 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, 36091658 + 36091659.

It is an arithmetic number, because the mean of its divisors is an integer number (36091659).

Almost surely, 2^72183317 is an apocalyptic number.

It is an amenable number.

72183317 is a deficient number, since it is larger than the sum of its proper divisors (1).

72183317 is an equidigital number, since it uses as much as digits as its factorization.

72183317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 32.

The square root of 72183317 is about 8496.0765650976. The cubic root of 72183317 is about 416.3695345782.

The spelling of 72183317 in words is "seventy-two million, one hundred eighty-three thousand, three hundred seventeen".