172044065 has 4 divisors (see below), whose sum is σ = 206452884. Its totient is φ = 137635248.

The previous prime is 172044011. The next prime is 172044073. The reversal of 172044065 is 560440271.

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

It can be written as a sum of positive squares in 2 ways, for example, as 71081761 + 100962304 = 8431^2 + 10048^2 .

It is a cyclic number.

It is not a de Polignac number, because 172044065 - 2²² = 167849761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17204402 + ... + 17204411.

It is an arithmetic number, because the mean of its divisors is an integer number (51613221).

Almost surely, 2^172044065 is an apocalyptic number.

It is an amenable number.

172044065 is a deficient number, since it is larger than the sum of its proper divisors (34408819).

172044065 is an equidigital number, since it uses as much as digits as its factorization.

172044065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34408818.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 172044065 is about 13116.5569033950. The cubic root of 172044065 is about 556.1772645711.

The spelling of 172044065 in words is "one hundred seventy-two million, forty-four thousand, sixty-five".