182197217 has 4 divisors (see below), whose sum is σ = 182596356. Its totient is φ = 181798080.

The previous prime is 182197193. The next prime is 182197219. The reversal of 182197217 is 712791281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712791281 = 1553 ⋅458977.

It can be written as a sum of positive squares in 2 ways, for example, as 69072721 + 113124496 = 8311^2 + 10636^2 .

It is a cyclic number.

It is not a de Polignac number, because 182197217 - 2¹⁴ = 182180833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (182197219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198884 + ... + 199797.

It is an arithmetic number, because the mean of its divisors is an integer number (45649089).

Almost surely, 2^182197217 is an apocalyptic number.

It is an amenable number.

182197217 is a deficient number, since it is larger than the sum of its proper divisors (399139).

182197217 is an equidigital number, since it uses as much as digits as its factorization.

182197217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399138.

The product of its digits is 14112, while the sum is 38.

The square root of 182197217 is about 13498.0449325078. The cubic root of 182197217 is about 566.9097326717.

The spelling of 182197217 in words is "one hundred eighty-two million, one hundred ninety-seven thousand, two hundred seventeen".