172204343 has 4 divisors (see below), whose sum is σ = 172692528. Its totient is φ = 171716160.

The previous prime is 172204337. The next prime is 172204363. The reversal of 172204343 is 343402271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172204343 - 2²² = 168010039 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 (172204313) 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, 243563 + ... + 244268.

It is an arithmetic number, because the mean of its divisors is an integer number (43173132).

Almost surely, 2^172204343 is an apocalyptic number.

172204343 is a deficient number, since it is larger than the sum of its proper divisors (488185).

172204343 is an equidigital number, since it uses as much as digits as its factorization.

172204343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488184.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 172204343 is about 13122.6652399579. The cubic root of 172204343 is about 556.3499244296.

The spelling of 172204343 in words is "one hundred seventy-two million, two hundred four thousand, three hundred forty-three".