4155539 has 2 divisors, whose sum is σ = 4155540. Its totient is φ = 4155538.

The previous prime is 4155533. The next prime is 4155551. The reversal of 4155539 is 9355514.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4155539 - 2⁴ = 4155523 is a prime.

It is not a weakly prime, because it can be changed into another prime (4155533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2077769 + 2077770.

It is an arithmetic number, because the mean of its divisors is an integer number (2077770).

Almost surely, 2^4155539 is an apocalyptic number.

4155539 is a deficient number, since it is larger than the sum of its proper divisors (1).

4155539 is an equidigital number, since it uses as much as digits as its factorization.

4155539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13500, while the sum is 32.

The square root of 4155539 is about 2038.5139195012. The cubic root of 4155539 is about 160.7715211357.

The spelling of 4155539 in words is "four million, one hundred fifty-five thousand, five hundred thirty-nine".