1153539 has 12 divisors (see below), whose sum is σ = 1691976. Its totient is φ = 757152.

The previous prime is 1153531. The next prime is 1153553. The reversal of 1153539 is 9353511.

It is not a de Polignac number, because 1153539 - 2³ = 1153531 is a prime.

1153539 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1153531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 354 + ... + 1559.

It is an arithmetic number, because the mean of its divisors is an integer number (140998).

2^1153539 is an apocalyptic number.

1153539 is a deficient number, since it is larger than the sum of its proper divisors (538437).

1153539 is a wasteful number, since it uses less digits than its factorization.

1153539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986 (or 1983 counting only the distinct ones).

The product of its digits is 2025, while the sum is 27.

The square root of 1153539 is about 1074.0293292085. The cubic root of 1153539 is about 104.8763169518.

The spelling of 1153539 in words is "one million, one hundred fifty-three thousand, five hundred thirty-nine".