173035409 has 2 divisors, whose sum is σ = 173035410. Its totient is φ = 173035408.

The previous prime is 173035381. The next prime is 173035441. The reversal of 173035409 is 904530371.

It is a happy number.

It is an a-pointer prime, because the next prime (173035441) can be obtained adding 173035409 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156250000 + 16785409 = 12500^2 + 4097^2 .

It is a cyclic number.

It is not a de Polignac number, because 173035409 - 2²⁰ = 171986833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (173035609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86517704 + 86517705.

It is an arithmetic number, because the mean of its divisors is an integer number (86517705).

Almost surely, 2^173035409 is an apocalyptic number.

It is an amenable number.

173035409 is a deficient number, since it is larger than the sum of its proper divisors (1).

173035409 is an equidigital number, since it uses as much as digits as its factorization.

173035409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 173035409 is about 13154.2924173062. The cubic root of 173035409 is about 557.2434785454.

The spelling of 173035409 in words is "one hundred seventy-three million, thirty-five thousand, four hundred nine".