1115539 has 2 divisors, whose sum is σ = 1115540. Its totient is φ = 1115538.

The previous prime is 1115533. The next prime is 1115551. The reversal of 1115539 is 9355111.

It is a weak prime.

It is an emirp because it is prime and its reverse (9355111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115539 - 2³ = 1115531 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557769 + 557770.

It is an arithmetic number, because the mean of its divisors is an integer number (557770).

2^1115539 is an apocalyptic number.

1115539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115539 is an equidigital number, since it uses as much as digits as its factorization.

1115539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 675, while the sum is 25.

The square root of 1115539 is about 1056.1907971574. The cubic root of 1115539 is about 103.7118193085.

The spelling of 1115539 in words is "one million, one hundred fifteen thousand, five hundred thirty-nine".