172235273 has 4 divisors (see below), whose sum is σ = 196840320. Its totient is φ = 147630228.

The previous prime is 172235267. The next prime is 172235309. The reversal of 172235273 is 372532271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 172235273 - 2⁴ = 172235257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172235233) 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, 12302513 + ... + 12302526.

It is an arithmetic number, because the mean of its divisors is an integer number (49210080).

Almost surely, 2^172235273 is an apocalyptic number.

It is an amenable number.

172235273 is a deficient number, since it is larger than the sum of its proper divisors (24605047).

172235273 is an equidigital number, since it uses as much as digits as its factorization.

172235273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24605046.

The product of its digits is 17640, while the sum is 32.

The square root of 172235273 is about 13123.8436823973. The cubic root of 172235273 is about 556.3832315125.

The spelling of 172235273 in words is "one hundred seventy-two million, two hundred thirty-five thousand, two hundred seventy-three".