172044227 has 2 divisors, whose sum is σ = 172044228. Its totient is φ = 172044226.

The previous prime is 172044179. The next prime is 172044251. The reversal of 172044227 is 722440271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172044227 - 2¹² = 172040131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172044227.

It is not a weakly prime, because it can be changed into another prime (172044427) 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 as a sum of consecutive naturals, namely, 86022113 + 86022114.

It is an arithmetic number, because the mean of its divisors is an integer number (86022114).

Almost surely, 2^172044227 is an apocalyptic number.

172044227 is a deficient number, since it is larger than the sum of its proper divisors (1).

172044227 is an equidigital number, since it uses as much as digits as its factorization.

172044227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 172044227 is about 13116.5630787947. The cubic root of 172044227 is about 556.1774391401.

Adding to 172044227 its reverse (722440271), we get a palindrome (894484498).

It can be divided in two parts, 172044 and 227, that added together give a palindrome (172271).

The spelling of 172044227 in words is "one hundred seventy-two million, forty-four thousand, two hundred twenty-seven".