173273449 has 2 divisors, whose sum is σ = 173273450. Its totient is φ = 173273448.

The previous prime is 173273447. The next prime is 173273459. The reversal of 173273449 is 944372371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138227049 + 35046400 = 11757^2 + 5920^2 .

It is a cyclic number.

It is not a de Polignac number, because 173273449 - 2¹ = 173273447 is a prime.

Together with 173273447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (173273447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86636724 + 86636725.

It is an arithmetic number, because the mean of its divisors is an integer number (86636725).

Almost surely, 2^173273449 is an apocalyptic number.

It is an amenable number.

173273449 is a deficient number, since it is larger than the sum of its proper divisors (1).

173273449 is an equidigital number, since it uses as much as digits as its factorization.

173273449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 40.

The square root of 173273449 is about 13163.3373048023. The cubic root of 173273449 is about 557.4988895793.

The spelling of 173273449 in words is "one hundred seventy-three million, two hundred seventy-three thousand, four hundred forty-nine".