2172535 has 8 divisors (see below), whose sum is σ = 2697120. Its totient is φ = 1677984.

The previous prime is 2172497. The next prime is 2172539. The reversal of 2172535 is 5352712.

2172535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2172535 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172539) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7347 + ... + 7636.

It is an arithmetic number, because the mean of its divisors is an integer number (337140).

2^2172535 is an apocalyptic number.

2172535 is a deficient number, since it is larger than the sum of its proper divisors (524585).

2172535 is a wasteful number, since it uses less digits than its factorization.

2172535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15017.

The product of its digits is 2100, while the sum is 25.

The square root of 2172535 is about 1473.9521701874. The cubic root of 2172535 is about 129.5156533107.

The spelling of 2172535 in words is "two million, one hundred seventy-two thousand, five hundred thirty-five".