173053221 has 8 divisors (see below), whose sum is σ = 251713824. Its totient is φ = 104880720.

The previous prime is 173053189. The next prime is 173053261. The reversal of 173053221 is 122350371.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 173053221 - 2⁵ = 173053189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 173053191 and 173053200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173053261) 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 7 ways as a sum of consecutive naturals, for example, 2621986 + ... + 2622051.

It is an arithmetic number, because the mean of its divisors is an integer number (31464228).

Almost surely, 2^173053221 is an apocalyptic number.

173053221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

173053221 is a deficient number, since it is larger than the sum of its proper divisors (78660603).

173053221 is a wasteful number, since it uses less digits than its factorization.

173053221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5244051.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 173053221 is about 13154.9694412416. The cubic root of 173053221 is about 557.2625984861.

The spelling of 173053221 in words is "one hundred seventy-three million, fifty-three thousand, two hundred twenty-one".