1535539 has 2 divisors, whose sum is σ = 1535540. Its totient is φ = 1535538.

The previous prime is 1535531. The next prime is 1535543. The reversal of 1535539 is 9355351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1535539 - 2³ = 1535531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1535539.

It is not a weakly prime, because it can be changed into another prime (1535531) 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, 767769 + 767770.

It is an arithmetic number, because the mean of its divisors is an integer number (767770).

2^1535539 is an apocalyptic number.

1535539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1535539 is an equidigital number, since it uses as much as digits as its factorization.

1535539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10125, while the sum is 31.

The square root of 1535539 is about 1239.1686729417. The cubic root of 1535539 is about 115.3684214652.

The spelling of 1535539 in words is "one million, five hundred thirty-five thousand, five hundred thirty-nine".