172201673 has 4 divisors (see below), whose sum is σ = 196801920. Its totient is φ = 147601428.

The previous prime is 172201669. The next prime is 172201723. The reversal of 172201673 is 376102271.

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 172201673 - 2² = 172201669 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172201613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12300113 + ... + 12300126.

It is an arithmetic number, because the mean of its divisors is an integer number (49200480).

Almost surely, 2^172201673 is an apocalyptic number.

It is an amenable number.

172201673 is a deficient number, since it is larger than the sum of its proper divisors (24600247).

172201673 is an equidigital number, since it uses as much as digits as its factorization.

172201673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24600246.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 172201673 is about 13122.5635071811. The cubic root of 172201673 is about 556.3470490434.

The spelling of 172201673 in words is "one hundred seventy-two million, two hundred one thousand, six hundred seventy-three".