2172265 has 8 divisors (see below), whose sum is σ = 2615040. Its totient is φ = 1732272.

The previous prime is 2172257. The next prime is 2172283. The reversal of 2172265 is 5622712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2172265 - 2³ = 2172257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1942 + ... + 2848.

It is an arithmetic number, because the mean of its divisors is an integer number (326880).

2^2172265 is an apocalyptic number.

It is an amenable number.

2172265 is a deficient number, since it is larger than the sum of its proper divisors (442775).

2172265 is an equidigital number, since it uses as much as digits as its factorization.

2172265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391.

The product of its digits is 1680, while the sum is 25.

The square root of 2172265 is about 1473.8605768525. The cubic root of 2172265 is about 129.5102877393.

Adding to 2172265 its reverse (5622712), we get a palindrome (7794977).

The spelling of 2172265 in words is "two million, one hundred seventy-two thousand, two hundred sixty-five".