2172539 has 2 divisors, whose sum is σ = 2172540. Its totient is φ = 2172538.

The previous prime is 2172497. The next prime is 2172551. The reversal of 2172539 is 9352712.

2172539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2172539 - 2⁸ = 2172283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2172559) 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 as a sum of consecutive naturals, namely, 1086269 + 1086270.

It is an arithmetic number, because the mean of its divisors is an integer number (1086270).

2^2172539 is an apocalyptic number.

2172539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172539 is an equidigital number, since it uses as much as digits as its factorization.

2172539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 29.

The square root of 2172539 is about 1473.9535270829. The cubic root of 2172539 is about 129.5157327973.

The spelling of 2172539 in words is "two million, one hundred seventy-two thousand, five hundred thirty-nine".