1125539 has 2 divisors, whose sum is σ = 1125540. Its totient is φ = 1125538.

The previous prime is 1125529. The next prime is 1125557. The reversal of 1125539 is 9355211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1125539 - 2⁸ = 1125283 is a prime.

It is a Chen prime.

It is equal to p₈₇₅₆₀ and since 1125539 and 87560 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1125529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562769 + 562770.

It is an arithmetic number, because the mean of its divisors is an integer number (562770).

2^1125539 is an apocalyptic number.

1125539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125539 is an equidigital number, since it uses as much as digits as its factorization.

1125539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 26.

The square root of 1125539 is about 1060.9142283898. The cubic root of 1125539 is about 104.0207983552.

The spelling of 1125539 in words is "one million, one hundred twenty-five thousand, five hundred thirty-nine".