173109401 has 4 divisors (see below), whose sum is σ = 174894132. Its totient is φ = 171324672.

The previous prime is 173109389. The next prime is 173109403. The reversal of 173109401 is 104901371.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135606025 + 37503376 = 11645^2 + 6124^2 .

It is a cyclic number.

It is not a de Polignac number, because 173109401 - 2⁶ = 173109337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173109403) 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, 892220 + ... + 892413.

It is an arithmetic number, because the mean of its divisors is an integer number (43723533).

Almost surely, 2^173109401 is an apocalyptic number.

It is an amenable number.

173109401 is a deficient number, since it is larger than the sum of its proper divisors (1784731).

173109401 is an equidigital number, since it uses as much as digits as its factorization.

173109401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784730.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 173109401 is about 13157.1045826960. The cubic root of 173109401 is about 557.3228952075.

The spelling of 173109401 in words is "one hundred seventy-three million, one hundred nine thousand, four hundred one".