2172635 has 16 divisors (see below), whose sum is σ = 2737152. Its totient is φ = 1653600.

The previous prime is 2172619. The next prime is 2172641. The reversal of 2172635 is 5362712.

2172635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2172635 - 2⁴ = 2172619 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 16520 + ... + 16650.

It is an arithmetic number, because the mean of its divisors is an integer number (171072).

2^2172635 is an apocalyptic number.

2172635 is a deficient number, since it is larger than the sum of its proper divisors (564517).

2172635 is a wasteful number, since it uses less digits than its factorization.

2172635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274.

The product of its digits is 2520, while the sum is 26.

The square root of 2172635 is about 1473.9860922003. The cubic root of 2172635 is about 129.5176404466.

The spelling of 2172635 in words is "two million, one hundred seventy-two thousand, six hundred thirty-five".