172277243 has 4 divisors (see below), whose sum is σ = 172306680. Its totient is φ = 172247808.

The previous prime is 172277233. The next prime is 172277249. The reversal of 172277243 is 342772271.

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 172277243 - 2⁶ = 172277179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172277249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2630 + ... + 18747.

It is an arithmetic number, because the mean of its divisors is an integer number (43076670).

Almost surely, 2^172277243 is an apocalyptic number.

172277243 is a deficient number, since it is larger than the sum of its proper divisors (29437).

172277243 is an equidigital number, since it uses as much as digits as its factorization.

172277243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29436.

The product of its digits is 32928, while the sum is 35.

The square root of 172277243 is about 13125.4425830141. The cubic root of 172277243 is about 556.4284206838.

The spelling of 172277243 in words is "one hundred seventy-two million, two hundred seventy-seven thousand, two hundred forty-three".