173572423 has 4 divisors (see below), whose sum is σ = 173606560. Its totient is φ = 173538288.

The previous prime is 173572409. The next prime is 173572433. The reversal of 173572423 is 324275371.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324275371 = 7 ⋅46325053.

It is a cyclic number.

It is not a de Polignac number, because 173572423 - 2⁹ = 173571911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173572433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7743 + ... + 20176.

It is an arithmetic number, because the mean of its divisors is an integer number (43401640).

Almost surely, 2^173572423 is an apocalyptic number.

173572423 is a deficient number, since it is larger than the sum of its proper divisors (34137).

173572423 is an equidigital number, since it uses as much as digits as its factorization.

173572423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34136.

The product of its digits is 35280, while the sum is 34.

The square root of 173572423 is about 13174.6887249756. The cubic root of 173572423 is about 557.8193501025.

The spelling of 173572423 in words is "one hundred seventy-three million, five hundred seventy-two thousand, four hundred twenty-three".