173212273 has 16 divisors (see below), whose sum is σ = 194922000. Its totient is φ = 152812800.

The previous prime is 173212211. The next prime is 173212301. The reversal of 173212273 is 372212371.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 9193024 + 164019249 = 3032^2 + 12807^2 .

It is a cyclic number.

It is not a de Polignac number, because 173212273 - 2¹⁷ = 173081201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (173212373) 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 15 ways as a sum of consecutive naturals, for example, 35803 + ... + 40351.

It is an arithmetic number, because the mean of its divisors is an integer number (12182625).

Almost surely, 2^173212273 is an apocalyptic number.

173212273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

173212273 is a deficient number, since it is larger than the sum of its proper divisors (21709727).

173212273 is a wasteful number, since it uses less digits than its factorization.

173212273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692.

The product of its digits is 3528, while the sum is 28.

The square root of 173212273 is about 13161.0133728372. The cubic root of 173212273 is about 557.4332715887.

The spelling of 173212273 in words is "one hundred seventy-three million, two hundred twelve thousand, two hundred seventy-three".